Solve Powerequation (10x^4y^3+5x^3y^2-15x^2y-25x^2y^4)
Reformatting the input :
Changes made to your input should not affect the solution: (1): "/-5x" was replaced by "/(-5x)".
Step 1 :
1.1 Negative number raised to an even power is positiveFor example let's look at (-7)6 , where (-7) , a negative number, is raised to 6 , an even exponent :(-7)6 can be written as (-7)•(-7)•(-7)•(-7)•(-7)•(-7)Now, using the rule that says minus times minus is plus, (-7)6 can be written as (49)•(49)•(49) which in turn can be written as (7)•(7)•(7)•(7)•(7)•(7) or 76 which is positive. We proved that (-7)6 is equal to (7)6 which is a positive number Using the same arguments as above, replacing (-7) by any negative number, and replacing the exponent 6 by any even exponent, we proved which had to be proved
Equation at the end of step 1 :
(((((10•(x4))•(y3))+((5•(x3))•(y2)))-((15•(x2))•y))-((25•(x2))•(y4))) —————————————————————————————————————————————————————————————————————•y 52x2Step 2 :
Equation at the end of step 2 :
(((((10•(x4))•(y3))+((5•(x3))•(y2)))-((15•(x2))•y))-(52x2•y4)) ——————————————————————————————————————————————————————————————•y 52x2Step 3 :
Equation at the end of step 3 :
(((((10•(x4))•(y3))+((5•(x3))•(y2)))-((3•5x2)•y))-52x2y4) —————————————————————————————————————————————————————————•y 52x2Step 4 :
Equation at the end of step 4 :
(((((10•(x4))•(y3))+(5x3•y2))-(3•5x2y))-52x2y4) ———————————————————————————————————————————————•y 52x2Step 5 :
Equation at the end of step 5 :
(((((2•5x4)•y3)+5x3y2)-(3•5x2y))-52x2y4) ————————————————————————————————————————•y 52x2Step 6 :
10x4y3 + 5x3y2 - 25x2y4 - 15x2y Simplify ——————————————————————————————— 52x2Step 7 :
Pulling out like terms :
7.1 Pull out like factors : 10x4y3 + 5x3y2 - 25x2y4 - 15x2y = 5x2y • (2x2y2 + xy - 5y3 - 3)
Checking for a perfect cube :
7.2 2x2y2 + xy - 5y3 - 3 is not a perfect cube
Canceling Out :
7.3 Canceling out x2 as it appears on both sides of the fraction line
Dividing exponents :
7.4 51 divided by 52 = 5(1 - 2) = 5(-1) = 1/51 = 1/5
Equation at the end of step 7 :
y • (2x2y2 + xy - 5y3 - 3) —————————————————————————— • y 5Step 8 :
Multiplying exponential expressions :
8.1 y1 multiplied by y1 = y(1 + 1) = y2
Final result :
y2 • (2x2y2 + xy - 5y3 - 3) ——————————————————————————— 5Từ khóa » (g) (5a^ 2 -1/5x^ 2 )(10x+5y)