5 over 7 multiplied by 280 is equal to:
200
2 over 7 multiplied by 280 is equal to:
80
5 over 7 multiply 280
2 over 7 multiply 280
3 answers
How to factorise expressions,( with examples)
Factorising expressions means expressing them as a product of simpler expressions. Here's how to factorise expressions:
1. Take out common factors: Look for common factors among the terms. Then, factor them out of each term.
Example: Factorise 6x + 9
Step 1: Take out 3 as a common factor from both terms.
6x + 9 = 3(2x + 3)
2. Use the distributive property: When a term in an expression has a common factor, use the distributive property to factor it out.
Example: Factorise 4x + 8y
Step 1: Take out 4 as a common factor.
4x + 8y = 4(x + 2y)
3. Grouping: When you can't find a common factor in the expression, group the terms in a way that they can be factorised.
Example: Factorise x² + 5x + 6
Step 1: Group the first two terms and the last two terms.
x² + 5x + 6 = (x² + 3x) + (2x + 6)
Step 2: Factorise each group.
x² + 3x = x(x + 3) and 2x + 6 = 2(x + 3)
Step 3: Combine the factors.
x² + 5x + 6 = (x + 3)(x + 2)
These are the most common methods to factorise expressions. However, there are more advanced methods for more complex expressions.
1. Take out common factors: Look for common factors among the terms. Then, factor them out of each term.
Example: Factorise 6x + 9
Step 1: Take out 3 as a common factor from both terms.
6x + 9 = 3(2x + 3)
2. Use the distributive property: When a term in an expression has a common factor, use the distributive property to factor it out.
Example: Factorise 4x + 8y
Step 1: Take out 4 as a common factor.
4x + 8y = 4(x + 2y)
3. Grouping: When you can't find a common factor in the expression, group the terms in a way that they can be factorised.
Example: Factorise x² + 5x + 6
Step 1: Group the first two terms and the last two terms.
x² + 5x + 6 = (x² + 3x) + (2x + 6)
Step 2: Factorise each group.
x² + 3x = x(x + 3) and 2x + 6 = 2(x + 3)
Step 3: Combine the factors.
x² + 5x + 6 = (x + 3)(x + 2)
These are the most common methods to factorise expressions. However, there are more advanced methods for more complex expressions.