Question

Solve by suitable identities (5p-3q)²

Answer 1

Answer:

formula

$(a- b) {}^{2} = a {}^{2} - 2ab + b {}^{2}$

a = 5p ; b = 3q

= (5p-3q) =5p*2-2(5p)(3q)+3q*2

= (5p-3q) =25p2-30pq+9q2