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Given:
- 5x²+8xy²-3-2xy²+7x²
- x= -2 and y = 3
Solution:
We have
5x² + 8xy² -3 -2xy² +7x²
=> 12x² + 6xy² -3
Now we will substitute the values of x and y
=> 12 (-2)² + 6 (-2)(3)² -3
=> 12(4) + 6 (-2)(9) -3
=> 48 + 6(-18) -3
=> 48 - 108 -3
=> 48 -111
=> -63
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