if x = -1 , y = -2 , z = 3, then find the value of x2 - yz - zx
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Answered by
14
x =-1
y = -2
z = 3
2x -yz-zx
2(-1) - (-2*3) - ( 3* -1)
= -2+6+3
= 7
y = -2
z = 3
2x -yz-zx
2(-1) - (-2*3) - ( 3* -1)
= -2+6+3
= 7
Answered by
8
x2-yz-zx
(-1)2-(-2)(3)-(3)(-1)
-2-(-6)-(-3)
-2+6+3
=7
answer is 7
(-1)2-(-2)(3)-(3)(-1)
-2-(-6)-(-3)
-2+6+3
=7
answer is 7
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