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3 years ago

Solve by factoring 25x^2+1=10

Mathematics

2 answers:

Soloha48 [4]3 years ago

8 0

Answer:

x = 3/5, -3/5

Step-by-step explanation:

Levart [38]3 years ago

3 0

Answer:

x = ± $\frac{3}{5}$

Step-by-step explanation:

Given

25x² + 1 = 10 ← subtract 10 from both sides

25x² - 9 = 0 ← in standard form

note that 25x² - 9 is a difference of squares and factors as

(5x - 3)(5x + 3) = 0

Equate each factor to zero and solve for x

5x - 3 = 0 ⇒ 5x = 3 ⇒ x = $\frac{3}{5}$

5x + 3 = 0 ⇒ 5x = - 3 ⇒ x = - $\frac{3}{5}$

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3 years ago

Read 2 more answers

If an object takes 7 second to fall to the ground, what was its initial height? Show your work.

Verdich [7]

Answer:240.1 m

Step-by-step explanation:

We are given the following equation that models the the time it takes to an object to fall to the ground:

$t_{(H)}=\sqrt{\frac{2H}{g}}$

Where:

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$H$ is the object's initial height

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Isolating $H$ :

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