Drag a statement or reason to each box to complete this proof.
this proof -2(x+1)=8, then x= -5

We have to prove that,

-2(x+1)=8, then x= -5

L.H.S.

By distributive property,

Adding 2 both sides ( Additive property of equality )

Divide both sides by -2 ( Division property of equality ),

= R. H. S

Hence, proved....

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a