5. -4x² + {(2x² - 3) - (4 - 3x )}
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Answer:
-139
Step-by-step explanation:
=8 + ( 2x - 3 - 4 + 3x) 21
= 8 + (5x - 7) x 21
= 8 + 105x - 147
= 105x - 139
hope this helps u...!!
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