Math, asked by farimarahman1003, 4 months ago

Find the value of the expression 16x²+25y²-40xy when x=2/3 and y=-4

Answers

Answered by mschaefer24

2

Answer:

513 7/9

Step-by-step explanation:

16x²+25y²-40xy

16(2/3)²+25(-4)²-40(-8/3)

16(4/9)+25(16)-40(-8/3)

64/9+400+320/3

64/9+3600/9+960/9

4624/9

513 7/9

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