Find the value of 25 x square + 16 y square + 40 x y if x is equal to 1 and y is equal to -1
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here the value of the equation is 1
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Answer:
-31
Step-by-step explanation:
substitute value of x and y in given equation
=25(1)square + 16(-1) + 40(1)(-1)
=25-16-40
=25-56
= -31
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