Answer:
12
Step-by-step explanation:
it’s 12 because 4 x 3 = 12
Answer:
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
Start by adding 9 to both sides, obtaining: √(x + 9) = 5.
Square both sides, obtaining: x + 9 = 25.
Subtract 9 from both sides: x = 16
Note that √(16+9) - 9 = -4, as required.
It’s (-8z^2 +8x +4y -2z)
Hope it helps