SOLUTION: {{{9x^2y^-2}}} x=-3 y=2

Algebra ->  Expressions-with-variables -> SOLUTION: {{{9x^2y^-2}}} x=-3 y=2      Log On


   

Question 73393: 9x%5E2y%5E-2 x=-3 y=2
Answer by Cintchr(481) About Me  (Show Source):
You can put this solution on YOUR website!
+9x%5E2y%5E-2+
x=-3 y=2
Plug these values in for x and y
+9%28-3%5E2%29%282%5E-2%29+
When a number has a negative exponent, it becomes it's own reciprocal and the exponent becomes positive, and ONLY that value moves ... everything elses stays put.
ex: ++x%5E-3+=+1%2Fx%5E3+ +2%2F7x%5E-5+=+2x%5E5%2F7+
+9%28-3%5E2%29%2F2%5E2+
work your exponents
+9%289%29%2F4+
Multiply
+81%2F4+
Divide or reduce as needed. If your instructer accepts improper fractions, make sure you reduce it. This IS fully reduced.