Question

ayúdenme por favor con este punto

Answer 1

$f(x)=x^{2} +2x-1\\f(-2)=(-2)^{2} +2(-2)-1=4-4-1=-1\\f(x)=-2=x^{2} +2x-1...x^{2} +2x+1=0....(x+1)^{2}=0...x=-1 \\f(x)=-1=x^{2} +2x-1...x^{2} +2x=0....(x+2)x=0....x+2=0...x=-2...y...x=0\\f(0.5)=(0.5)^{2} +2(0.5)-1=0.25+1-1=0.25\\f(1)=(1)^{2} +2(1)-1=1+2-1=2\\f(1.25)=(1.25)^{2} +2(1.25)-1=1.5625+2.5-1=3.0625$Respuesta:

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