(13)x^(2)-4x-21

Factorize each of the following algebraic expressions: a^(2)+14a+48(2)x^(2)-4x-21y^(2)+5y-36(4)(a^(2)-5a)^(2)-36(a+7)(a-10)+16

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

Divide x^(2)-4x-21 by x-7

Divide :(x^(2)+4x-21)by(x-3)

The fraction (x-2)/(x^(2)+4x-21) is not defined when x=

If (x^(2)+4x-21) is divided by x+7 , then the quotient is

The solution set of x^(2)-4x-21>=0 is

Solve sqrt(x^(2)+4x-21)+sqrt(x^(2)-x-6)=sqrt(6x^(2)-5x-39)

The set of values of x in R satisfying the inequality x^(2)-4x-21 le 0 is