Which of the following is a correct interpretation of the expression 2 - (-7)2−(−7)2, minus, left parenthesis, minus, 7, right parenthesis?
choose 1
choose 1

(choice a, checked)
a
start at 222 on the number line and move 777 to the left

(choice b)
b
start at 222 on the number line and move 777 to the right

(choice c)
c
start at -7−7minus, 7 on the number line and move 222 to the left

(choice d)
d
start at -7−7minus, 7 on the number line and move 222 to the right

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation:

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct

ιт ιѕ 6 6/23

step-by-step explanation:

нσρє ι ¢συℓ∂ нєℓρ уσυ συт

what do you mean

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