3 years ago

25x^2-16 how to factor

1 answer:

4 0

Did you learn how to factor the difference of two squares ?

This thing is the difference of two squares.

The first term is the square of 5x .
The second term is the square of 4 .

When it's factored, it's

(sum of the square roots) x (difference of the square roots) .

25 x² - 16 = (5x + 4) times (5x - 4) .

To check it, go ahead and FOIL that out, and you'll get 25x²-16 .

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