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8 May, 18:36

What is the answer to 4x²+7=31

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  1. 8 May, 21:35
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    Answer: x2 = 6

    FYI: The x2 is x squared

    Step-by-step explanation:

    Simplifying

    4x2 + 7 = 31

    Reorder the terms:

    7 + 4x2 = 31

    Solving

    7 + 4x2 = 31

    Solving for variable 'x'.

    Move all terms containing x to the left, all other terms to the right.

    Add '-7' to each side of the equation.

    7 + - 7 + 4x2 = 31 + - 7

    Combine like terms: 7 + - 7 = 0

    0 + 4x2 = 31 + - 7

    4x2 = 31 + - 7

    Combine like terms: 31 + - 7 = 24

    4x2 = 24

    Divide each side by '4'.

    x2 = 6

    Simplifying

    x2 = 6
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