Find 2x2 − 2z4 + y2 − x2 + z4 if x = −4, y = 3, and z = 2.
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2x^2-2z^4+y^2-x^2+z^4
= 2(-4)^2 -2(2)^4+(3)^2-(-4)^2+(2)^4
=2*16-2*16+3+9-16+16
32-32+3+9-16+16
12
= 2(-4)^2 -2(2)^4+(3)^2-(-4)^2+(2)^4
=2*16-2*16+3+9-16+16
32-32+3+9-16+16
12
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