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bekas [8.4K]
3 years ago
14

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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