factor expression

Question

Factor the expression. -10x2 - 41x - 21

-(2x - 7)(5x + 3)

-(2x + 7)(5x + 3)

(-2x + 7)(5x + 3)

Prime Polynomial

Answer 1

-10x²-41x-21

factor out -1

(-1)(10x²+41x+21)

10*21=2*5*3*7=(2*3)(5*7)=6*35 and 6+35=41, the coefficient of the middle term

-1(2x+?)(5x+?) (the 5 multiplies the 7 and the 2 multiplies the 3)

-1(2x+7)(5x+3)

-(2x+7)(5x+3)