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which of the following is the standard form of the quadratic equation 2×+(×-4)(×+1)=9?​

Sagot :

Answer:

You answer it

2×+(×_4)(×+1)=9 Ask your mother if your correct or not

Answer:

x²-x-13=0

Step-by-step explanation:

2x+(x-4)(x+1)=9

2x+(x²+x-4x-4)-9=0

2x+x²-3x-4-9=0

x²-x-13=0

pa correct kung mali(please correct it if its wrong.)