Question

9x²+9x-4
please write correct answer​

Answer 1

Answer:

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Answer 2

9x²-9x-4 =0

9x²-(12-3) x-4=0

9x²-12x+3x-4=0

3x(3x-4) +1(3x-4) =0

(3x-4) (3x+1) =0

3x-4=0 3x+1=0

x=4/3 x=-1/3

\begin{gathered} \alpha + \beta = - b \div a \\ 4 + 3 + ( - 1 \div 3) \\ 1 = 1 \\ \alpha \beta = c \div a \\ 4 \div 3 \times - 1 \div 3 = - 4 \div 9 \\ - 4 \div 9\end{gathered}

α+β=−b÷a

4+3+(−1÷3)

1=1

αβ=c÷a

4÷3×−1÷3=−4÷9

−4÷9