***CORRECT ANSWER CAN BECOME BRAINLIEST*** Solve -5x^2 = -25 using any method. Round your solutions to the nearest hundredth.

Question

***CORRECT ANSWER CAN BECOME BRAINLIEST***

Solve -5x^2 = -25 using any method. Round your solutions to the nearest hundredth.

The solutions are x ≈ ___ x ≈ ___

AND

What is the most efficient method for solving this equation?

The most efficient method is ____,

1. Factoring
2. Completing the square
3. Using the Quadratic Formula

AND

…..because the equation _____.

1. Can be written in the form x^2 = d.
2. has a perfect square trinomial on its left side.
3. Is not easily factorable and a ≠ 1
4 Is not easily factorable, but a = 1 and b is even.
4. Is easily factorable.

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Thiên Hương 4 years 2021-08-19T09:45:10+00:00 1 Answers 11 views 0

Answers ( )

  1. mocmien2
    0
    2021-08-19T09:46:41+00:00
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    Answer:

    The most efficient method is completing the square because the equation can be written in the form x^2 - d

    x ~ 2.24

    x ~ -2.24

    Step-by-step explanation:

    Solve the equation using any method that is efficient. The most efficient method is completing the square, because the equation can be written in the form x^2 - d. Use this method to solve the problem, since the equation is already in the format, x^2 - d, all one has to use is inverse operations to solve the equation.

    -5x^2 = -25\\/-5\\\\x^2 = 5\\\sqrt{}\\\\x = +- \sqrt{5}

    x ~ 2.24

    x ~ -2.24

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )