Question

Find a quadratic polynomial whose zeroes are -3/4 and 4/5​

Answer 1

(x + 3/4) (x + 4/5)=0
x (x+4) +3/4 (x+4)=0
x^2 + 4x + 3x/4 +12/4=0
x^2 + 19x/4 + 3 = 0
4x^2 +19x +12 = 0
quadratic polynomial = 4x^2 + 19x + 12