Question

6. If a + b + c = 9 and ab + bc + ca = 26, then find a² + b3 + c2.​

Answer 1

Step-by-step explanation:

a+b+c=9

ab+bc+ca=26

(a+b+c)2=a2+b2+c2+2(ab+bc+ca)

81=a2+b2+c2+2(26)

81=a2+b2+c2++56

81-56=a2+b2+c2

25=a2+b2+c2