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5 votes
8x=3x²-1 plz help me show your work

User Rozina
by
7.5k points

2 Answers

2 votes

Answer:

The answer is
x=(4(+-)√(19) )/(3) in exact form or
x=2.7863,
x=-0.1196 in decimal form.

Explanation:

To solve this equation, start by moving all expression to the left side of the equation, which will include subtracting
3x^2 and adding 1 to both sides of the equation. The equation will look like
8x-3x^2+1=0.

Then, use the quadratic formula to find the solutions to the equation. The quadratic formula looks like
(-b(+-)√(b^2-4ac) )/(2a).

For this problem, the quadratic variables are as follows:


a=-3\\b=8\\c=1

The next step is to substitute the values
a=-3,
b=8, and
c=1 into the quadratic formula and solve for x. The quadratic formula will look like
(-8(+-)√(8^2-4(-3)(1)) )/(2*-3). To simplify the equation, start by simplifying the numerator, which will look like
x=(-8(+-)2√(19) )/(2*-3). Then, multiply 2 by -3 and simplify the equation, which will look like
x=(4(+-)√(19) )/(3). The final answer is
x=(4(+-)√(19) )/(3) in exact form. In decimal form, the final answer is
x=2.7863,
x=-0.1196.

User Gekctek
by
7.9k points
7 votes

Answer:

Explanation:

3 times 8= 24 • 24 = 576 - 1 =575

or

3•8=24•2=48-1=47

not sure

User Yoni Jah
by
9.2k points

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