Question

2.
If a+b+c= 7 and ab + bc + ca = 15, then find a + b2 + c2.
it's urgent pls answer it​

Answer 1

Answer:

if it's a²+b²+c²

Step-by-step explanation:

the answer is 19

a2+b2+c2=(a+b+c)²-2(ab+bc+ca)

=7²-2×15

=49-30

=19