Question

factorise x² -1x+90​

Answer 1

Answer:

(x+9)(x+10)

Step-by-step explanation:

x²+10x+9x+90

x(10+x)+9(10+x)

(10+x)(x+9)

I think in the question there should be +x instead of -x as if there will be -x then at that condition there couldn't be +90

as it will break into -10x+9x whose multiple will be -90

if we take the question as x²-x-90

then, x²-10x+9x-90

x(x-10)+9(x-10)

then answer will be ,,(x+9)(x-10)

Answer 2

Answer:

x²-10x+9x-90

=x(x-10)+9(x-10)

=(x-10)(x+9)