Answer:
n² + 3n +1
Step-by-step explanation:
n(n+1) + 2n + 1
<h3>i) distribute n into the parantheses</h3>
= (n×n) + (n×1) + 2n + 1
= n² + n + 2n + 1
<h3>ii) collect like terms</h3>
= n² + 3n +1
Answer:
(-x-7)(x+4)
Step-by-step explanation:
<u>Answer:</u>
x² - 10x + 25
<u>Step-by-step explanation:</u>
The formula for squaring any binomial (an expression with two terms) is:
(a ± b)² = a² ± 2ab + b²
Let a = x and b = 5.
∴ Substituting:
(x - 5)² = x² - 2(x)(5) + (-5)²
= x² - 10x + 25
Answer:
This is an example of an positive relationship.
Step-by-step explanation:
As the values for one variable decrease from one person to another, the values for a second variable also tend to decrease. This is an example of an positive relationship.
