Question

If a and b are the zeros of the polynomial x2--5x+7 find polynomial 2a+3b and 2b+3a

Answer 1

(2a+3b) and (2b+3a)

2a × (2b+3a) + 3b × (2b+3a)

4ab + 6a^2 + 6b^2 + 9ab

6a^2 +6b^2 + 9ab + 4ab

6a^2 + 6 b^2 + 13ab