Question

Simplify using identity : (x^2 + 4) (x^2 + 9) ​

Answer 1

Answer:

x^4 + 22x^2 + 36

Step-by-step explanation:

(x^2 + 4) (x^2 + 9) ​  Indentity 4- (x+a)(x+b)=x^2 + x(a+b)+ab

((x^2)^2) + (x^2(4+9)) + (4x9)

x^4 + 4x^2+ 18x^2 + 36

x^4 + 22x^2 + 36