Yesterday i was doing the question of class 9th ncert of Polynomials chapter of exercise 2.5 of math of question no.1(5) what is the best way for solving this problem i think this is very important question for class 9th Use suitable identities to find the following products: (5) (3-2x) (3+2x)
Here, we gonna use the identity
a^2 – b^2 = (a+b) (a-b)
Step-by-step explanation:
So, first write the question.
write the identity
Like this
a^2 – b^2 = (a+b) (a- b)
(3-2x) (3+2x)
(3) ^ 2 – (2x)^2
= 9 – 4x^2