If x=2, y=3, z=-4, find the value of
3 +
3 +
3 + 3
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Answer:
f x=2, y=3, z=-4, find the value of
3 + 2-4y
3 +
3 + 3
Step-by-step explanation:
If x= 2, y = 3, z = 4 then
3x^2-4y^2+2z^23x
2
−4y
2
+2z
2
=3(2)^2-4(3)^2+2(4)^23(2)
2
−4(3)
2
+2(4)
2
=\left(3\times4\right)-\left(4\times9\right)+\left(2\times16\right)(3×4)−(4×9)+(2×16)
=12-36+3212−36+32
=44-3644−36
=88
∴ 3x^2-4y^2+2z^2=83x
2
−4y
2
+2z
2
=8
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