evaluate the following algebraic expressions
8pq^2 (2p^2q-3p+5q)+7pq^2if p=1.7 and q =0.4
in my text book the ans is 0.19 please tell how to find
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Answer:
0.19
Step-by-step explanation:
8pq² ( 2p²q - 3p + 5q) + 7pq²
= 16p³q³ - 24p²q² + 40pq³ + 7 pq²
= 8p²q²(2pq - 3) + pq² (40q + 7)
= 8 * (1.7)² * (0.4)² *( 2*1.7*0.4 - 3) + 1.7 * (0.4)² * (40 * 0.4 + 7)
= 3.6992 (-1.64) + 0.272 (23)
= −6.066688 + 6.256
= 0.189312
if we round off, it is approximately equal to 0.19
please mark me as the brainliest
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