Question

Solve for x in the equation x squared + 2 x + 1 = 17

Answer 1

Answer:

Two solutions x=-5.12 and x=3.12

Step-by-step explanation:

x^2+2x+1=17

Subtract 17

so x^2+2x-16

Then solve using the quadratic formula

so x=$\frac{-2+or-\sqrt{2^2-4*1*(-16)}}{2*1}$

solve x=$\frac{-2+or-\sqrt{4+64} }{2}$

Separate the equations into two x= equations of + or -

x=$\frac{-2+2\sqrt{17} }{2}$

and x= $\frac{-2-2\sqrt{17} }{2}$

x=-5.12

x=3.12