What is the value of this expression when x= -6 and y= -1/2? 4(x2+3)-2y

y=-10

Step-by-step explanation:

y=-1/2 4(6(2)+3)-2y

+2y       6(2)            +2y

3y=-1/2 4(12+3)

multiplie 4 times 12 and 4 times 3

3y=-1/2 48+12

add 48 and 12

3y=-1/2 60

divide -1/2 and 60

3y/3=-30/3

y=-10

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

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