State the range of this quadratic function f(x)=x2+2x-3
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Step-by-step explanation:
f(x)= x^2 + 2x - 3
= x^2 + 3x - x - 3
= x( x + 3) - 1( x + 3)
=( x - 1) ( x + 3)
x = 1 and x = -3 Answer
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