Bonsoir;
A= -7x +14
B= 4x² +5x +12x +15
=4x² +17x +15
C= 27x +3x² -9-x
= 3x² +26x -9
A-B+C
= (-7x+14) - (4x² +17x +15) + 3x² +26x -9
= -7x+14 - 4x² -17x -15 + 3x² +26x -9
= - x² +2x -10
3)
D = 2(4-a)
E= 4(x² +1)
F = 5x( y -2)
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Verified answer
Bonsoir;
A= -7x +14
B= 4x² +5x +12x +15
=4x² +17x +15
C= 27x +3x² -9-x
= 3x² +26x -9
A-B+C
= (-7x+14) - (4x² +17x +15) + 3x² +26x -9
= -7x+14 - 4x² -17x -15 + 3x² +26x -9
= - x² +2x -10
3)
D = 2(4-a)
E= 4(x² +1)
F = 5x( y -2)