# 2x^{2}-x-1=2\left(x-1\right)\times \left(\frac{2x+1}{2}\right) Add \frac{1}{2} to x by finding a common denominator and adding the numerators. Then reduce the fraction to lowest terms if possible.

Question from dana, a student: I don't know what is 2xy what does that mean? is it 2x+2y or 2x times y Please help! thank you for your time!! :)

So now you can multiply what are the same. You can multiply the coefficients together and the x variables together as follows: 2 × 2 = 4. x × x = x2. Then you put the answers together and make the multiplication sign invisible again to get the following answer: 2x × 2x = 4x2. What is 2x times 3x. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. 7y. The product of x and y xy. x + 5y = 2. SOLUTION: Notice that if you multiply the second equation by –2, the NUMBER THEORY Seven times a number plus three times another number  And the reciprocal of something more complicated like "x/y" is "y/x".

## L̊a t f(x)={2x(ex-1)}/{tan−1 x2}. Beräkna gränsvärdet limx→ 0 {xsin 2x3}/{cos 3x2 -1}. 8. L\aa t $A$ vara en $n\times n$-matris s\aa dan att $\det A =2$.

2 x × x. Still have questions?

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