Question

simplify this expression

x squared-11x+28

x squared-4x-21

Answer 1

\(\Large\color{red}{ \bf x^{2}-11x+28 }\) and I am simplifying this ?

Answer 2

yes ok now wat

Answer 3

(x-4)(x-7), right?

Answer 4

x^2-11+28
we need 2 numbers that multiply to 28 and those same 2 numbers that add to -11.
unfortunately, that's not possible, so we have to use a quadratic formula. using the q. formula, i got (x+7)(x+4)
x^2-4x-21
we need 2 numbers that multiply to -21 and add to -4 when added.
i got 3 and -7. so (x-7)(x+3)

Answer 5

yes sorry (x-4)(x-7)