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Q: What is the LCM of x2 plus 16x plus 64 and x2 plus 3x minus 40?

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x2 + 48x + 320

(3x + 1)(x + 5)

(x + 5)(3x + 1)

15x2+16x-15 = (3x+5)(5x-3) when factored

-3x2 + 16x + 12 = -3x2 + 18x - 2x + 12 = -3x*(x - 6) - 2(x - 6) = -(3x + 2)*(x - 6)

(5x - 3)(3x + 5)

Combining like terms, 16x + 20 = 180 or 16x = 160 so that x = 10

NOTE: xx can be written as x^2 i.e. x squared 3x^2 + 16x + 5 = 3 x^2 + x + 15x + 5 (Since 16x = x + 15x) = x ( 3x + 1 ) + 5 ( 3x + 1 ) = ( x + 5 ) ( 3x + 1 ) Therefore the factors are ( x + 5 ) and ( 3x + 1 )

Assuming there should have been a plus or minus sign between 4x2and 3x, the answer is: a binomial.Assuming there should have been a plus or minus sign between 4x2and 3x, the answer is: a binomial.Assuming there should have been a plus or minus sign between 4x2and 3x, the answer is: a binomial.Assuming there should have been a plus or minus sign between 4x2and 3x, the answer is: a binomial.

what is the answer to 3x^2-16x-12

x^2 + 3x + 2/(-3x) - x^2 - 2=3x-2+2/(-3x)=3x-2-2/(3x)

(x + 3)(3x - 2)

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