substract the sum of 18a+12b-10c and 9a+13b-15c
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Answer:
(ab+2b
2
+3b
2
−a
2
)−((12ab−10b
2
−18a
2
)+(9ab+12b
2
+14a
2
))
(ab+2b
2
+3b
2
−a
2
)−(21ab+2b
2
−4a
2
)
(ab+2b
2
+3b
2
−a
2
)−21ab−2b
2
+4a
2
(ab+5b
2
−a
2
)−21ab−2b
2
+4a
2
=3b
2
+3a
2
−20ab
Step-by-step explanation:
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