Write 7842060000 in the standard form. 3. If x = 1, y = -2 and z = - 1, find the value of x2 – 2y2 + 4z2 - xyz. Fynress the ratio of 3,5 m and 70 cm in the simplest form.
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0
Answer:
I don't know this answer
Step-by-step explanation:
sorry for that I am not able to give answer
Answered by
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Answer:
7.84206×10^9
Step-by-step explanation:
3. x^2-2y^2+4z^2-xyz
solution=1^2-2×(-2)^2+4×(-1)^2-1×(-2)×(-1)
= 1-2×4+4×1-2
= 1-8+4-2
= 1+4-8+2
= 5-10
= -5
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