Complete the statement to describe the expression (a+b+c)(d+e+f)(a+b+c)(d+e+f)left parenthesis, a, plus, b, plus, c, right parenthesis, left parenthesis, d, plus, e, plus, f, right parenthesis. The expression consists of
factors, and each factor contains
terms

rick would give her the best deal as he will charge $8.88 per hour

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15