SOLUTION: PreAP/GT Algebra II, teacher supplements the textbook with worksheets from College Algebra books. Worksheet titled SAT/ACT Test Prep #4.
3 parts to this problem:
x^ + y^ = 16
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-> SOLUTION: PreAP/GT Algebra II, teacher supplements the textbook with worksheets from College Algebra books. Worksheet titled SAT/ACT Test Prep #4.
3 parts to this problem:
x^ + y^ = 16
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Question 104027: PreAP/GT Algebra II, teacher supplements the textbook with worksheets from College Algebra books. Worksheet titled SAT/ACT Test Prep #4.
3 parts to this problem:
x^ + y^ = 16
xy = 8
(x + y)^ = ? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! x^2 + y^2 = 16
y^2 = 16 - x^2
y =
:
xy = 8
substitute for y, find x:
x* = 8
Square both sides
x^2(16-x^2) = 64
:
-x^4 + 16x^2 - 64 = 0; a quadratic equation
+x^4 - 16x^2 + 64 = 0; multiplied by -1
Factor:
(x^2 - 8)(x^2 - 8) = 0
x^2 = +8
x =
x =
:
Find y: *y = 8
y =
y =
