`21x^2+5x-6`

21x^(2) - 28x + 10=0

21x^(2) - 28x + 10=0

21x^(2) - 28x + 10=0

21x^(2) - 28x + 10=0

21x^(2) - 28x + 10=0

If P(x)=(x+2)(x^(2)-4x-21),Q(x)=(x-7)(2x^(2)+x-6) and their HCF is x^(2)-5x-14 then LCM of P(x)&Q(x) is

Factorize each of the following quadratic polynomials: ( i ) x^(2)-23x+132 (ii) x^(2)-21x+108 (iii) x^(2)+5x-36

Find the GCD of 6x^(3) -30x^(2) + 60 x-48 and 3x^(3)-12x^(2) + 21x-18 .