3 years ago

30. Find the value of expression 20m2 + 30m + 40 when a)m = -3 b)m= - 4 c) m = 3

Mathematics

1 answer:

Temka [501]3 years ago

4 0

Answer:

di you mean m² when you say m2 or not?

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Answer: $\boxed{\bold{m=-66}}$

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Explanation: $\downarrow\downarrow\downarrow$

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[ Step One ] Switch Sides

$\bold{-2\left(m+4\right)+m=58}$

[ Step Two ] Expand $\bold{-2\left(m+4\right)+m}$

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[ Step Three ] Rewrite Equation

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[ Step Four ] Add 8 To Both Sides

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[ Step Six ] Divide Both Sides By -1

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[ Step Seven ] Simplify

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$\bold{\rightarrow Mordancy \leftarrow}$

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30. Find the value of expression 20m2 + 30m + 40 when a)m = -3 b)m= - 4 c) m = 3​

30. Find the value of expression 20m2 + 30m + 40 when a)m = -3 b)m= - 4 c) m = 3