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How do you solve the quadratic #25m^2-8=-7# using any method?

Answer 1

#m = 1/5 or m = -1/5#

A quadratic equation is typically solved by factoring, completing the square, or using the formula after being made equal to 0.

Because it lacks an x-term, this quadratic equation is a special case.

Slide the digits to the right to obtain:

#25m^2 = -7+8 = 1#

#(25m^2)/25 = 1/25 " "larr# divide both sides by 25

#m^2 = 1/25 " "larr" #find the square root of both sides

#m = +-sqrt(1/25)#

#m = 1/5 or m = -1/5#

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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