3 years ago

Express x^2+4x-7 in the form (x+a)^2-b where a and b are integers

Mathematics

1 answer:

lukranit [14]3 years ago

4 0

Answer:

(x + 2)^2 - 11.

Step-by-step explanation:

f(x) = x^2 + 4x - 7

Now x^2 + 4x = (x + 2)^2 - 4 so we have:

f(x) = (x + 2)^2 - 4 - 7

f(x) = (x + 2)^2 - 11.

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Use the quadratic formula to solve x² + 9x + 10 = 0.<br><br> What are the solutions to the equation?

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Step-by-step explanation:

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-----------------------------------------------

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