Question

evaluate (4 + 5x) 2​

Answer 1

Answer:

you should have written square properly

$(4 + 5x)^{2}$

16 + 25$x^{2}$

25$x^{2}$ = -16

$x^{2}$ = $\frac{-16}{25}$

x = $\frac{\sqrt{-16} }{25}$

x= -4i/5