🧮 algebra
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Quadratic Basics
1. Let's start by stating the problem: understanding quadratics as taught in Year 9 Pearson Maths.
2. A quadratic equation is any equation that can be written in the form $$y = ax^
Frog Jump Height
1. The problem states that the frog's jump is modeled by the function $f(x) = -x^2 + 2x$, and we need to find the maximum height of the jump.
2. This function is a quadratic in the
Perpendicular Line
1. The problem asks for the equation of a line perpendicular to the line given by $p(t) = 3t + 4$ and passing through the point $(3, 1)$.
2. The slope of the line $p(t)$ is the coe
Line Parallel
1. The problem asks for the equation of a line passing through the point $(1,4)$ and parallel to the line $y = 2x + 1$.
2. Lines that are parallel have the same slope. The given li
Find X Value
1. **State the problem:** We need to find the value of $x$ for a linear function passing through points $(x, 2)$ and $(-4, 6)$ with slope $m=3$.
2. **Recall the slope formula:** Th
Solution Nature
1. **Stating the problem:** We need to discuss the nature of solutions of systems of linear equations, specifically the types: consistent, inconsistent, independent, and dependent.
Find Inverse
1. We are given the inverse function $$f^{-1}(x) = \frac{x - 8}{7}$$ and need to find the original function $$f(x)$$.
2. Recall that if $$y = f^{-1}(x)$$, then $$x = f(y)$$. So, we
Inequality Errors
1. Problem 1: Prove or disprove the inequality $x^3 + y^3 < (x + y)^3$.
2. The student expands $(x + y)^3$ correctly:
Sheep Height Sequence
1. Problem: You saw a group of sheep with a total of 28 legs and 14 eyes. How many sheep are there?
- Each sheep has 4 legs and 2 eyes.
Simplify Expression
1. The problem is to simplify the expression $3 - 6a - \frac{5}{2a}$.
2. First, identify the terms: $3$ is a constant, $-6a$ is a linear term in $a$, and $-\frac{5}{2a}$ is a ratio
Sequence Series
1. Let's start by defining a **sequence**: it is an ordered list of numbers, where each number is called a term.
2. A **series** is the sum of the terms of a sequence.
Sequence Series
1. Let's start by defining a **sequence**. A sequence is an ordered list of numbers, where each number is called a term. For example, the sequence $1, 3, 5, 7, \dots$ lists odd num
Sequence Series
1. Let's start by defining what a sequence and a series are.
2. A sequence is an ordered list of numbers, for example, $a_1, a_2, a_3, \dots, a_n$.
Factor Quadratic
1. **State the problem:** Factor the quadratic expression $x^2 + 8x + 16$.
2. **Identify coefficients:** The quadratic is in the form $ax^2 + bx + c$ where $a=1$, $b=8$, and $c=16$
Factor Quadratic
1. The problem is to factor the quadratic expression $x^2 + 8x + 6$.
2. We look for two numbers that multiply to $6$ (the constant term) and add to $8$ (the coefficient of $x$).
Factor Cubic
1. **State the problem:** Factor the cubic polynomial $$x^3 + 8x + 16$$.
2. **Look for rational roots using the Rational Root Theorem:** Possible roots are factors of 16 (constant
Factor Expression
1. The problem is to factor the expression $x^2 + 8 + 16$.
2. First, notice that the expression is $x^2 + 8 + 16$, which seems to be missing an $x$ term to be a perfect square trin
Sequences Series
1. Let's start by defining a **sequence**. A sequence is an ordered list of numbers following a specific pattern. For example, $1, 2, 3, 4, 5, \dots$ is a sequence where each numbe
Find Coefficients
1. **State the problem:** We are given the equation $$\frac{x^2}{2} + \frac{1}{x^2} - \frac{2}{x}$$ and told it can be rewritten as $$x^4 + ax^3 + bx^2 + cx + 2 = 0.$$ We need to f
Line Equation
1. The problem is to find the equation of the line passing through the points $(1,2)$ and $(3,8)$.
2. First, calculate the slope $m$ using the formula:
Incomplete Equation
1. The problem is incomplete as only "The equation" is provided without further details.
2. Please provide the full equation or problem statement so I can assist you step-by-step.