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africaz111

  • 2 years ago

When the quadratic equation y = (x − 5)(2x + 3) is written in standard form, what is the value of the coefficient "b"? answers: 7 −7 2 −15

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  1. Decart
    • 2 years ago
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    -7

  2. africaz111
    • 2 years ago
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    can you explain?

  3. Decart
    • 2 years ago
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    \[2x ^{2}-7x-15\]

  4. Decart
    • 2 years ago
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    foil

  5. africaz111
    • 2 years ago
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    ok. can you help me with another problem?

  6. Decart
    • 2 years ago
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    ?

  7. africaz111
    • 2 years ago
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    Identify which equation is a quadratic equation. y = −5x − 3 y = −4x(x + 10) + 34 y + x2 = (x − 4)(x + 3) y − 2 = (x − 2)(x2 + 1)

  8. Decart
    • 2 years ago
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    quadratic means that a variableis raised to the power of 2

  9. africaz111
    • 2 years ago
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    ok so the second one?

  10. Decart
    • 2 years ago
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    no you have to simplify them

  11. Decart
    • 2 years ago
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    there may be more than one

  12. africaz111
    • 2 years ago
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    ok. thank you

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