Using Basic Identities in word Problems

Using Basic Identities in word Problems

Example

Perimeter of a rectangle with sides a and b is 30cm. Area of the second rectangle with length a+b and width a-b is 45cm². Find the area of the first rectangle.

Example

The sum of two numbers is 4 and their product is 3. Find the sum of squares of these numbers.

Multiple Choice

The sum of two numbers is 7 and their difference is 1. Find the difference of squares of these numbers.

• 14

• 7

• 6

• 35

The sum of two numbers is 6 and the sum of their squares is 20. find their Product.

Multiple Choice

The difference of two numbers is 14 and the sum of their squares is 106. Find the product of these numbers.

• 35

• -24

• 42

• -45

The sum of squares of two numbers is 100 and their product is 48. find sum of cubes of these numbers.

HOMEWORK!!!

page 155

Examples 9-15