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AveGali [126]
3 years ago
13

What is x for the equation 4x^2-12x=7 (Only one variable for x)

Mathematics
2 answers:
maksim [4K]3 years ago
5 0

Answer:

3.5 or -0.5

Step-by-step explanation:

4x²-12x=7

4x²-12x-7=0

4x²-14x+2x-7=0

2x(2x-7)+1(2x-7)

(2x+1)(2x-7)

x=3.5 or x=-0.5

VARVARA [1.3K]3 years ago
3 0

Answer:

x=-1/2, 7/2

Step-by-step explanation:

move all terms to the left side and set them equal to zero. then set eac factor to zero

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If the factors of quadratic function g are (x-7) and (x+3), what are the zeros of function g?
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Step-by-step explanation:

1. you set each expression equal to 0.

x-7=0 and x+3=0

2. Next you need to get the variable by itself so you would add 7 to both sides on the first equation and subtract 3 from both sides for the second one.

3. So your answers would be x=7 and x=-3. Those are the zeros.

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Step-by-step explanation:

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4 years ago
X/3+5=10 solve for x only type the numerical answer below
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Step-by-step explanation:

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\\ \sf\longmapsto 2x+y=2

\\ \sf\longmapsto 2x=2-y

\\ \sf\longmapsto x=\dfrac{2-y}{2}\dots(1)

And

\\ \sf\longmapsto x+1=y+2

\\ \sf\longmapsto x=y+2-1

\\ \sf\longmapsto x=y+1

  • Put the value

\\ \sf\longmapsto \dfrac{2-y}{2}=y+1

\\ \sf\longmapsto 2-y=2(y+1)

\\ \sf\longmapsto 2-y=2y+2

\\ \sf\longmapsto 2-2=2y+y

\\ \sf\longmapsto 3y=0

\\ \sf\longmapsto y=\dfrac{0}{3}

\\ \sf\longmapsto y=\infty

  • Put in eq(1)

\\ \sf\longmapsto x=\dfrac{2-y}{2}

\\ \sf\longmapsto x=\dfrac{2-\infty}{2}

\\ \sf\longmapsto x=\dfrac{2}{2}

\\ \sf\longmapsto x=1

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