Find the value of
a) 3p2 + 4q2 − 5 when p = 3 and q = −2
b) x3 − 3x2y + 2xy2 + 8xy + 9 when x = −3 and y = 1.
Answers
Answered by
1
Answer:
a) 38
b)-102
It is the correct answer
Answered by
1
Answer:
1. 3×9 + 4× -2× -2 - 5
= 27 + 16 - 5
= 41 - 5 = 36.
2. -3×-3×-3 - 3×-3×-3 ×1 + 2×-3××1×1 + 8×-3×1 + 9.
= -27 -27 -6 -24 +9
= -75.
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