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How would you factor 8x2 - xy - 7y2 The 2 after the x and y are the squares. so its 8x squared - xy - 7y squared.?
You can factor this multivariate polynomial (a polynomial with several variables, here x and y), by looking at it as a univariate polynomial in either x or y.
This would give you a simple second order equation of the form ax2+bx+c, which you can solve. This will give you 2 solutions, say x1 and x2, and can then factor your polynomial to a(x-x1)(x-x2).
In our case:
a=8, b=-y and c=-7y2
and the solutions for this equation are x1=y and x2=-7/8*y
and this gives us
8x2 - xy -7y2 = 8(x-y)(x+7/8y) = (x-y)(8x+7y)
What else can I help you with?
What is y times 7y?
Yx7y = 7y2 (squared )
Factor of 7y2 plus 2y-5?
(7y - 5)(y + 1)
How do you solve 3x 7y2 when solving for y?
By following the directions in your textbook. Or you could try paying attention in class; that would probably work too.
What is y3 plus 7y2-5y?
That factors to y(y2 + 7y - 5)
What is the coefficient of y in 5 7y2 x?
Zero. There is no term with just y in it.
Integral 1 plus 7y-y2dy?
Just use the power rule for each part, and add or substract. The answer is y + 7y2/2 - y3/3 + CJust use the power rule for each part, and add or substract. The answer is y + 7y2/2 - y3/3 + CJust use the power rule for each part, and add or substract. The answer is y + 7y2/2 - y3/3 + CJust use the power rule for each part, and add or substract. The answer is y + 7y2/2 - y3/3 + C
Factor 4x2-32x plus 63?
When factoring an expression we are attempting to find two or more numbers or expressions that when multiplied will result in our starting expression. For example, to factor 12 we would say 2*2*3 because when multiplied, it would equal 12. To factor this expression, start by grouping both sides with parentheses. 4x^2-4x+2xy-2y (4x^2-4x) + (2xy-2y) Now use reverse distribution to pull a 4x out of the first part and a 2y out of the second. (4x^2-4x) + (2xy-2y) 4x(x-1) + 2y(x-1) looking at the expression as a whole we see that both terms have a factor of x-1. So, we reverse distribute again to get a factored expression 4x(x-1) + 2y(x-1) (x-1)(4x+2y) Factor out a two from the second expression to get the final, fully factored answer. (x-1)(4x+2y) 2(x-1)(2x+y)
How do you make a squared on a keyboard?
shift 6... 4^8 I just clicked the superscript button on the bold/italics/underline row and then typed the number and it worked. The superscript button is the one with the A squared symbol.
What is the answer to 21y2 plus 72y-48 by factoring?
Step 1: 3(7y2 + 24y - 16) Step 2: 3(7y - 4)(y + 4) Assuming original expression was equal to zero, y = 4/7 or -4
What is the LCM of 7y2 x 49y8?
Since 98y9 is a multiple of 14y2, it is automatically the LCM of this problem.
How do you graph x equals equations Like x equals 7y2?
-- make a list of 20 or 30 small numbers-- one at a time, put each number in place of 'y', and figure out what 'x' is-- mark a point at the pair of numbers you have for (x, y) on the graph-- after a while, you'll start to see the graph take shape, and you can fill in the gaps between the points
How do you solve y4-84 plus 5y2?
You cannot solve it since only one side of an equation is given. If the equation was y4 + 5y2 - 84 = 0 then y4 + 12y2 - 7y2 - 84 = 0 or y2*(y2 + 12) - 7*(y2 + 12) = 0 or (y2 - 7)*(y2 + 12) = 0 then y2 = 7 or y2 = - 12 y = +or- sqrt(7) and, if you are in the complex domain, also y = +or- i*sqrt(12) where i is the imaginary square root of -1.
