Question

(x-10)(x+9) find product using suitable properties
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Answer 1

Step-by-step explanation:

(x-10)(x+9)=0

x(x+9) -10(x+9)=0

x^2 +9x-10x-90=0

x^2 -x -90=0

x^2 -10x+ 9x-90 =0

x(x-10) +9(x-10) =0

(x-10)(x+9)=0

x-10=0 x+9=0

x=10 x=-9