3 years ago

7x^2=63 solve for x please show work

Mathematics

1 answer:

o-na [289]3 years ago

3 0

Answer:

x = ±3

Step-by-step explanation:

Step 1: Write equation

7x² = 63

Step 2: Solve for <em>x</em>

Divide both sides by 7: x² = 9
Square root both sides: x = ±3

Step 3: Check

<em>Plug in x to verify it's a solution.</em>

7(3)² = 63

7(9) = 63

63 = 63

7(-3)² = 63

7(9) = 63

63 = 63

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