We Distribute, Yet Things Multiply Class 8 Very Short Question Answer

We Distribute, Yet Things Multiply Class 8 Very Short Question Answer

We Distribute, Yet Things Multiply Class 8 Very Short Question Answer

Question 1.

Expand 2x (z - x - y).

Solution:

2x(z - x - y) = 2x × z - 2x × x - 2x × y

= 2xz - 2x² - 2xy.

Question 2.

Find (3 - 2x) (3 + 2x), using an identity.

Solution:

Using (a - b)(a + b) = a² - b², we get (3 - 2x) (3 + 2x) = 3² - (2x)² = 9 - 4x².

Question 3.

Write the product of 4967 × 11 in one line.

Solution:

4967 × 11 =

Question 4.

Find the product 5x × 2y × (z + 3).

Solution:

5x × 2y × (z + 3) = 10xy (z + 3)

= 10xyz + 30xy.