Question

como resolver f(x)=-x²+169

Answer 1

f(x)=-x²+169

-x²+169=0

-x²=-169

x²=169

x²=13²  ==>x'=13  e x''=-13

Answer 2

f(x) = - x² + 169

f(x) = 0 

0 = - x² + 169

x² = 169

x = + - √169

x = + - 13