Question

Find the value of (5p-7q)^2 ????

Answer 1

Hey friend,
Here is the answer you were looking for:
${(5p - 7q)}^{2} \\ \\ using \: the \: identity \\ {(a - b)}^{2} = {a}^{2} + {b}^{2} - 2ab \\ \\ = {(5p)}^{2} + {(7q)}^{2} - 2 \times 5p \times 7q \\ \\ = 25 {p}^{2} + 49 {q}^{2} - 70pq$

Hope this helps!!!!

@Mahak24

Thanks...
☺☺

Answer 2

(5p-7q)^2=(5p)^2 + (7q)^2 - 2(5p)(7q)
  
=25p^2 + 49q^2 - 70pq