Question

Find: (2x² – 9) (2x² – 5)

Required Own Answer :-

Answer 1

Answer:

Jithendra A B

Answered May 14, 2020

The given function is

f(x — 2)=2x²+3x — 5

Put x — 2 = z

Then x= z +2

This gives

f(z)= 2(z +2)²+3(z +2) — 5

f(z)=2(z²+4z +4)+3z +6 — 5

f(z)=2z² + 8z + 8 + 3z + 1

f(z)=2z² + 11z + 9

If we change the variable to x we get

f(x)=2x² + 11x + 9

Answer 2

Given:

• f(x — 2)=2x²+3x — 5

To find:

• Put x — 2 = z

Prove

• Then x= z +2

This gives

• f(z)= 2(z +2)²+3(z +2) — 5

• xf(z)=2(z²+4z +4)+3z +6 — 5

• f(z)=2z² + 8z + 8 + 3z + 1

• f(z)=2z² + 11z + 9

If we change the variable to x we get

• f(x)=2x² + 11x + 9

Hope it helps

#Be brainly