If x = 1, y = 2 and z = 5, find the value of 5x2 − 3y2 + 2z2
Answers
Answered by
1
Answer:
5x^2-3y^2+2z^2 = 5(1) ^2-3(2) ^2+2(5) ^2
= 5 - 12 + 50
= 43 ans.
Answered by
0
Answer:
5x2 - 3y2 + 2z2
= 5×x×2 - 3×y×2 + 2×z×2
NOW PLACE THE NUMBERS
= 5×1×2 - 3×2×2 + 2×5×2
= 10-12+20
= 18
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