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(x-4)(x-8)
Which of the following is equivalent to the given expression?
Choose 1 answer:
(A) 
x^(2)-12 x+32
(B) 
2x^(2)+4x+32
(c) 
x^(2)+4x-12
(D) 
2x^(2)-12 x+32

(x4)(x8) (x-4)(x-8) \newlineWhich of the following is equivalent to the given expression?\newlineChoose 11 answer:\newline(A) x212x+32 x^{2}-12 x+32 \newline(B) 2x2+4x+32 2 x^{2}+4 x+32 \newline(C) x2+4x12 x^{2}+4 x-12 \newline(D) 2x212x+32 2 x^{2}-12 x+32

Full solution

Q. (x4)(x8) (x-4)(x-8) \newlineWhich of the following is equivalent to the given expression?\newlineChoose 11 answer:\newline(A) x212x+32 x^{2}-12 x+32 \newline(B) 2x2+4x+32 2 x^{2}+4 x+32 \newline(C) x2+4x12 x^{2}+4 x-12 \newline(D) 2x212x+32 2 x^{2}-12 x+32
  1. Apply distributive property: Apply the distributive property (also known as the FOIL method for binomials) to multiply the first terms of each binomial. (x×x)=x2(x \times x) = x^2
  2. Multiply outer terms: Multiply the outer terms of the binomials.\newline(x×8)=8x(x \times -8) = -8x
  3. Multiply inner terms: Multiply the inner terms of the binomials.\newline(4×x)=4x(-4 \times x) = -4x
  4. Multiply last terms: Multiply the last terms of each binomial.\newline(4×8)=32(-4 \times -8) = 32
  5. Combine like terms: Combine the like terms from steps 22 and 33.\newline8x+(4x)=12x-8x + (-4x) = -12x
  6. Final expanded form: Add up all the results from steps 11, 55, and 44 to get the final expanded form. x212x+32x^2 - 12x + 32

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