Answer:
Explanation:
Rearranging:
(i) 16x2−3=(2x+5)(5x−3)
16x^2 - 3 = 10x^2 + 19x -15
6x^2 - 19x + 12 = 9
THIS IS QUADRATIC.
(ii) (x+2)3=x3−4
(x + 2)(x + 2)^2 = x^3 - 4
(x + 2)(x^2 + 4x + 4) = x^3 - 4
x^3 + 4x^2 + 4x + 2x^2 + 8x + 8 = x^3 - 4
6x^2 + 12x + 4 = 0.
THIS IS QUADRATIC.
(iii) x(x+1)+8=(x+2)(x−2)
x^2 + x + 8 = x^2 - 4
x + 12 = 0
THIS IS NOT QUADRATIC.