solve for x
4x^2-5x-9=0
Answers
Answered by
1
Answer:
(x+x)(4x+9)=0
Step-by-step explanation:
4x^2-5x-9=0
4x^2-(9-4)x-9=0
4x^2-9x+4x-9=0
x(4x-9)+x(4x+9)=0
(x+x)(4x+9)=0
Answered by
2
answer
x=-1 or x=9÷4
Step-by-step explanation:
4x^2-5x-9=0
4x^2-9x-4x-9=0
x(4x-9)+(4x-9)=0
(x+1)(4x-9)=0
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