Q1 of 105 Page 280

Find the errors and correct the following mathematical sentences
x(3x + 2) = 3x² + 2

If LHS is

x(3x + 2)

Then RHS would be

⇒ x(3x + 2)

= 3 × x × x – 2 × x

= 3x² – 2x

The error is 2x instead of 2

Hence x(3x + 2) = 3x² + 2x

Factorize the expressions and divide them as directed:

26z³(32z²–18) ÷ 13z²(4z – 3)

Find the errors and correct the following mathematical sentences

3(x – 9) = 3x – 9

Find the errors and correct the following mathematical sentences

2x + 3x = 5x²

Find the errors and correct the following mathematical sentences

2x + x + 3x = 5x

Questions · 105

12. Factorisation

1 1 1 1 1 1 1 2 2 2 2 2 2 2 3 3 3 3 3 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 5 5 5 5 6 7 1 1 1 1 1 2 2 2 2 2 2 2 3 3 3 3 3 3 4 4 4 4 4 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Find the errors and correct the following mathematical sentencesx(3x + 2) = 3x2 + 2