Solve for x in the equation x2+2x+ 1 = 17.
ox=-1+ 15
ox=-1+17
25
ооо
+
трт
+ +
13

For this case we must solve the following quadratic equation:

Subtracting 17 from both sides of the equation we have:

The solution of the equation is given by:

Where:

Substituting the values we have:

Thus, we have two roots:

  answer:

  write 548 as 500 + 40 + 8. multiply each addend by 5. then add the three products to get 2,740.