Question

prove that 2a=b+c... Q.13

Answer 1

Answer:

B2-4AC=0

(B-c)2-4(a-b)(c-a)=0. B2+c2-2bc-4(ac-a2-bc+ab)=0 B2+c2-2bc-4ac+4a2+4bc-4ab)=0. B2+c2+2a(2a)+2bc-2c(2a)-2b(2a)=0 (b+c-2a)2