The product of two numbers is 240. The first number is 8 less than the second number. Which equation can be used to find x, the lesser number?
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1st number be x-8
2nd number be x
x. x-8=240
x²-8x-240=0
x²-20x+12x-240=0
x(x-20)+12(x-20)
(x+12)(x-20)
so number can be -12 or 20
2nd number be x
x. x-8=240
x²-8x-240=0
x²-20x+12x-240=0
x(x-20)+12(x-20)
(x+12)(x-20)
so number can be -12 or 20
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