Mathematics, 18.07.2019 17:00, devaughnnorthcu8221
Given that f(x)=2x+1,find g(x) if g(x)=2[f(x)]²-1
Answers: 2
![f(x)=2x+1\\\\g(x)=2\left[f(x)\right]^2-1\\\\g(x)=2\cdot(2x+1)^2-1=2\cdot[(2x)^2+2\cdot2x\cdot1+1^2\right]-1\\\\=2\cdot(4x^2+4x+1)-1=8x^2+8x+2-1=8x^2+8x+1](/tpl/images/0104/7251/d4c9b.png)
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