Question 2. If p = -2 find the value of:
(i) 4p + 7
(ii) -3p+ + 4p + 7
Solution: (i) 4p + 7
(iii) -2p - 3pº + 4p + 7
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i) 4p+1 = 4×(-2) +1
= -8+1
= -7
ii) -3p+4p+7
= -3×(-2) +4×(-2) +7
= 6-8+7
= 6+7-8
= 13-8
= 5
iii) -2p - 3pº + 4p + 7
= -2×-2 - 3×(-2)^0 +4×-2 +7
= 4-3×1 -8+7
= 4-3-8+7
= 1-8+7
=1+7-8
=8-8
=0
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