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elena55 [62]
3 years ago
13

Simplify the expression 4(x − 5)(x2 + x + 2).

Mathematics
1 answer:
N76 [4]3 years ago
3 0

Answer:

  4x^3 − 16x^2 − 12x − 40

Step-by-step explanation:

= 4(x)(x^2 +x +2) +4(-5)(x^2 +x +2) . . . use the distributive property

= 4x^3 +4x^2 +8x -20x^2 -20x -40 . . . . and again

= 4x^3 -16x^2 -12x -40

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For the given expression, which whole number (w) will make the expression true? 5/6
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Answer:

D. 7

Step-by-step explanation:

The question is incomplete. Here is a possible complete question

For the given expression, which whole number (w) will make the expression true? 5/6 < w/6

A. 3

B. 4

C. 5

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Given the inequality expression:

5/6 < w/6

Cross multiply

5×6 < 6×w

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Divide both sides by 6

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Reciprocate both sides(this will change the sense of the inequality)

1/5>1/w

Cross multiply

w > 5×1

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This shows that the value of w is a value greater than 5 but not 5. According to the option, the only value greater than 5 is 7. Hence the whole number (w) that will make the expression true is 7

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3 years ago
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PEMDAS
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2 years ago
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