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3 years ago

Simplify the following expression 6X2 plus 8X -3 minus 3X2-6

Mathematics

1 answer:

Murrr4er [49]3 years ago

7 0

Answer:

-24

Step-by-step explanation:

I´m guessing by the big x sign you want me to multiply so the first step in the equation is to multiply because of PEMDAS so(6*2)+(8*-3)-3*2-6,

so 6*2=12,8*-3=-24,-3*2=-6

12+-24-6-6,

12-24=-12,-6+-6=-12

-12+-12=-24

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3 years ago

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AnnyKZ [126]

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3 years ago

Solve by completing the square. Round your answers to the nearest tenth and then locate the greater solution. <img src="https://

Andrews [41]

Step-by-step explanation:

Step 1: Write our Givens

${x}^{2} + 10x - 7 = 0$

Move the constant term ,(the term with no variable) to the right side.

Here we have a negative 7, so we add 7 to both sides

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Next, we take the linear coeffeicent and divide it by 2 then square it.

$( \frac{10}{2} ) {}^{2} = 25$

Then we add that to both sides

${x}^{2} + 10x + 25 = 7 + 25$

${ {x}^{2} } + 10x + 25 = 32$

Next, we factor the left,

$(x + 5)(x + 5) = 32$

we got 5 because 5 add to 10 and multiply to 25 as well.

so we get

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This is called a perfect square trinomial.

Next, we take the square root of both sides

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± menas that we have a positive and negative solution.

Subtract 5 form both side so we get

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2 years ago

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kondaur [170]

Answer:

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Step-by-step explanation:

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2 years ago

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galben [10]

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1-(2)²+√(11-4(2))

=√3-3

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=0

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3 years ago