Question

i) Solve for x: 22x × 2x+9= (43)​

Answer 1

Answer:

Given equation is:

2x+9

+x=13

2x+9

=13−x

On squaring, we get

2x+9=x

+169−26x

+160−28x=0

−20x−8x+160=0

⟹(x−20)(x−8)=0

∴x=20 or x=8

∴x=8