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Answer:
16a + 15b - 4b for a = 2, b=3
= 16(2) + 15(3) - 4(3)
= 33 + 45 - 12
= 78 - 12
= 66
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Answer:
1]. ( 4^2+ x + 1) + ( -x^2 + 4x + 5)
4^2 + x + 1 - x^2 + 4x + 5
= 3x^2 + 5x + 4
2]. ( 16*2 ) + ( 15*3) - (10*2) - (4*3)
32+45- 20 - 12 = 45
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