4 In an algebraic Pyramid, you find the expression in each bl by adding the expressions in the two blocks below it. Copy and complete these pyramids. a 5x + x = 6x бх 3x 5x х b 12p Start by working out 12p- 8p 8p 7p
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Answer:
Adding the given expression as follows:
(5x
3
+7+6x−5x
2
)+(2x
2
−8−9x)+(4x−2x
2
+3x
3
)+(3x
3
−9x−x
2
)+(x−x
2
−x
3
−4)
=x
3
(5+3+3−1)+x
2
(−5+2−2−1−1)+x(6−9+4−9+1)+(7−8−4)
=10x
3
−7x
2
−7x−5
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