Find the value of 25x²+16y²-40xy if x=4 and y=2
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2
Answer:
144
Explanation:
- x and y values are 4,2
- so, substitute those value in the above equation
- 25(4²)+16(2²)-40(4)(2)
- 25(16)+16(4)-40(8)
- 400+64-320
- 144
I hope this helps you
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