Question

Simplify: x(3 - 2z + y) for x = 2, z = -1 and y = 1.​

Answer 1

Step-by-step explanation:

(xy+yz)

2

−2x

2

y

2

z when x=−1,y=1,z=2

⇒[y(x+z)]

2

−2x

2

y

2

z

⇒y

2

[x

2

+z

2

+2xz−2x

2

z]

⇒(1)

2

[(−1)

2

+2

2

+2(−1)(2)−2(−1)

2

(2)]

⇒[1+4−4−4]⇒−3

∴(xy+yz)

2

−2x

2

y

2

z at x=−1,y=1 and z=2 is −3

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