Q. 194.0( 5 Votes )

# Multiply the mono

Answer :

(i) 15y2 (2 – 3x)

= 30y2 – 45xy2

Putting x = -1, y = and z = = 30 ( )2 – 45 (-1) ( )2

= 30 ( ) + 45 ( )

= + = = (ii) -3x (y2+z2)

Putting x = - 1, y = and z = = - 3 (-1) ( )2 – 3 (-1) ( )2

= + = + = (iii) z2 (x-y)

Putting x = - 1, y = and z = z2 (x – y)

= ( )2 (-1 - )

= ( ) ( )

= (iv) xz(x+y2)

Putting x = - 1, y = and z = = (-1)2 ( ) + (-1) ( )2 ( )

= - ( )

= = Rate this question :

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