Question

Solve: x^2+3(x+3)=0. Find the answer correct to 2 decimal places.

Answer 1

Answer:

x²+3(x+3)=0

x²+3x+9=0

but the discriminant is

b²-4ac

= 3²-4(1)(9)

=9-36

=-25 <0

hence no real roots exist

roots r imaginary

Answer 2

$\huge \mathfrak{ \color{blue}{ \underline{ \underline{Answer}}}}$

• x² + 3(x+3) = 0
• x² + 3x+9=0

But the discriminant

• b² - 4ac
• 3²-4(1)(9)
• 9-36
• -25 < 0