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o-na [289]
3 years ago
12

The expression on the left side of an equation is shown below.

Mathematics
1 answer:
kifflom [539]3 years ago
3 0

9514 1404 393

Answer:

  (d)  -2(x +5)

Step-by-step explanation:

For an infinite number of solutions, the left and right sides of the equal sign must have equivalent expressions.

<u>Left side</u>

  -5(x +2) +3x

  = -5x -10 +3x

  = -2x -10

  = -2(x +5)

<u>Right Side Choices</u>

(a) -5x +15 +2x = -3x +15

(b) -5x -10

(c) x -2x +2 +3x = 2x +2

(d) -2(x +5) = -2x -10 . . . . . . . matches left-side expression

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It helps to understand the process of multiplying the binomials. Consider the simple case ...

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If the <em>constant</em> term (ab) is <em>negative</em>, the signs of (a) and (b) are <em>different</em>.

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___

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