Answer:

Step-by-step explanation:
Take out 4:
4(x^2-8x)-12
=4(x^2-8x+16-16)-12
=4(x^2-8x+16)-64-12
=4(x^2-4)^2 - 76
=
Answer:
y = -4
Step-by-step explanation:
y = 6 is line that is parallel to x-axis
So, the required is also parallel to x -axis
The equation of line parallel to x-axis , y = c, where c is y-intercept
y = - 4
Answer:
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Step-by-step explanation:
Answer

Step-by-step explanation:
a square root has a meaning only if the radicand is positive or equal to 0
so x≥0