Question

if thita and bita are the roots of the quadratic equation x2-2x-7=0, find the value thita square+ bita square

Answer 1

Step-by-step explanation:

theta sq. + beta sq. =(theta+beta)^2-2theta * beta

theta*beta =c/a=-7/2

theta +beta=-b/a=2/2=1

putting values

1^2-2*(-7/2)=8

Answer 2

It's a bit messy...!! But I hope it'll help ya...