Question

find the value of z if 4z + x2 = (x - 2) (x + 2)

Answer 1

Answer:

• x²+2x-2x+4
• x²-x+4-2z

Answer 2

Answer:

Step-by-step explanation:

∴4z+x2=(x -2)+(x+2)

∴4z+x2=x2-4

∴4z=x2-x2-4

∴4z=(-4)

∴z=(-1)

Ans.