c. Subtract (x2 + 3x - 4) from (2x2-5x-14)
d. Subtract (-1822 +15a-42) from (10a +8a -10)
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Step-by-step explanation:
c.( 2x+3x - 4x) from ( 2x2-5x-14)
= 2x2-5x- 14 - 2x -3x +4x
= 2x -5x -14+2 - 5x +4x
= -3x-12-x
=-3x-x -12
= 4x -12
d. (-1822+ 15a -42) from (10a + 8a -10 )
= 10a +8a-10 +1822 +15a -42
= 18a -10+ 1822-42+15a
= 18a + 15a +1780 -10
= 33a + 1770
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