Question

If x = 4, y = 3 and z = -2, find the value of :

$i) \: x - 2y + 3z$
$ii)xy + yz + zx$
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Answer 1

Answer:

1) (-8)

2) (-2)

Step-by-step explanation:

1) 4-(2×3)+(3×(-2))

=4-6-6

=4-12

=(-8)

2) (4×3)+(3×(-2))+((-2)×4)

=12+(-6)+(-8)

=12-14

= (-2)

Answer 2

$\huge\color {pink}\boxed{\colorbox{black} { ANSWER}}$

1) x=4,y=3,z=−2

4−(2)(3)+(3)(−2)

4−(2)(3)+(3)(−2)

=−8

2) x=4,y=3,z=−2

(4)(3)+(3)(−2)+(−2)(4)

(4)(3)+(3)(−2)+(−2)(4)

=−2

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