Question

25x²+16y²-40xy when x=6,y=7​

Answer 1

25 × 6^2 + 16 × 7^2 - 40×6×7

25 × 12 + 16 × 14 - 1680

300 + 224 - 1680

524 - 1680

-1156

hope it help u

Answer 2

Answer:

4

Step-by-step explanation:

25×6²+16×7²-40×6×7

25×36+16×49-1680

900+784-1680

1684-1689

4

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