Question

factorise: 9-x^2
a. (3-x)(3+x)
b. 81+x^2-18x
c. 81-x^2-18x​

Answer 1

Answer:

the answer will be

(a) (3+x)(3-x) as

using formula $x^{2} -y^{2} =(x+y)(x-y)$ in the question x=3 and y=x

Step-by-step explanation: