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keana

  • 3 years ago

Using complete sentences, explain how to completely factor: 2x2 - 6x - 36

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  1. Calcmathlete
    • 3 years ago
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    First, factor out the GCF, 2. 2(x^2 - 3x - 18) 2(x - 6)(x + 3)

  2. beeqay
    • 3 years ago
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    Ok, find two numbers that will give you a product of \[-72 (2 \times -36)\] and that will add up to \[-6\] The two numbers in this case would be -12 and 6. So we rewrite the equation as \[2x^2 -12x+6x-36\] and then factor out the common factors \[2x(x-6)+6(x-6)\]

  3. beeqay
    • 3 years ago
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    Can you go on from there?

  4. beeqay
    • 3 years ago
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    product of \[-72 \]because of\[ (2 \times -36)\] *

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