Find the product -3y (xy+y2) and find its value for x = 4 and y = 5

- 3y (xy + y2)= - 3xy2 – 3y3According to question:When x = 4 and y = 5= - 3xy2 – 3y3= - 3 (4) (5)2 – 3 (5)3= - 300 – 375= - 675

Q17 of 116 Page 6

Find the product -3y (xy+y²) and find its value for x = 4 and y = 5

- 3y (xy + y²)

= - 3xy² – 3y³

According to question:

When x = 4 and y = 5

= - 3xy² – 3y³

= - 3 (4) (5)² – 3 (5)³

= - 300 – 375

= - 675

Find the following products:

Find the product 24x²(1-2x) and evaluate its value for x=3

Multiply and verify the answer for x = 1 and y = 2

Multiply the monomial by the binomial and find the value of each for x=-1, y=0.25 and z=0.005:

(i) 15y² (2-3x)

(ii) -3x (y²+z²)

(iii) z² (x-y)

(iv) xz(x+y²)