10. C
11. C
12. B
I have to add more words to make this post :)
3 because you shouldn't give away your cookies ◔◡◔.
The expression -4 (-11 + 4n) – 3(- 2n + 9) is equivalent to the expression 17 — 10n.
<h3>What is an equivalent expression?</h3>
The equivalent is the expressions that are in different forms but are equal to the same value.
The expression is given below.
⇒ -4 (-11 + 4n) – 3(- 2n + 9)
On simplifying, we have
⇒ 44 – 16n + 6n – 27
⇒ 17 — 10n
More about the equivalent link is given below.
brainly.com/question/889935
#SPJ1
Answer:
x1 = -4, x2 = -16
Step-by-step explanation:
1.- equal the equation to 0
x^2 + 20x + 100 - 36 = 0
x^2 + 20x + 64
2.- factor to simplify.
(x + 4)(x + 16) = 0
3.- equal each factor to 0 and solve for x.
x + 4 = 0, x = -4
x + 16 = 0, x = -16
