Question

Evaluate ( 7x - 2y ) ^ 2
Please answer this for me ​

Answer 1

hope it helps you mate.....

Answer 2

Answer:

Step-by-step explanation:

(7x - 2y)^2

let's use the identity (a-b)^2=a^2+b^2-2ab

so,

(7x)^2 + (2y)^2 - 2(7x)(2y)

= 49x^2 + 4y^2 - 28xy