Question

evaluate (3p-7q)two ki square​

Answer 1

Answer:

9p² + 49q² - 42pq

Step-by-step explanation:

(3p - 7q)² [By using this identity: (a-b)²]

(3p)² + (-7q)² + 2 (3p) (-7q)

9p² + 49q² - 42pq

Answer 2

Answer:

(3p-7q)^2=9p^2-42pq+49p^2

Step-by-step explanation:

(3p-7q)two ki square​

Given

(3p-7q)^2

We know that

(a-b)^2=a^2-2ab+b^2

here a=3p  b=7q

Substitute the values given;

(3p-7q)^2=(3p)^2-2(3p)(7q)+(7q)^2

(3p-7q)^2=9p^2-42pq+49p^2

HOPE THIS HELPFUL....