Question

Hii, brainly users
Plz.... Solve my ques....with solution Plz............. Plz.......
Plz............

Answer 1

${(a + b + c)}^{2} = {a}^{2} + {b }^{2} + {c}^{2} + 2(ab + bc + ca)$
put the value in the formula

hope this may help you