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1 year ago

Answer this Question

Mathematics

1 answer:

enyata [817]1 year ago

8 0

Answer:

n = -13

Step-by-step explanation:

√10 - 3n = 7 ⇔

⇔ 10 - 3n = 49 ⇔ We need to remove the square root. Ex: √n = 2 ⇔ n = 2²

⇔ -3n = 49 - 10 ⇔
⇔ -3n = 39 ⇔
⇔ n = $\frac{39}{-3}$ = -13 (as -3 changes members, as it was multiplying, it now divides, conversion).

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If f(x)=3x²-5x+4, then f(-2) =

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Answer:

Step-by-step explanation:

First let's re-write the equation:

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