Question

Which of the following expression contains only like terms?

5x² + 4x³ + 3x², 5xy - ­7xy + 11xy, -­5x³ y² - ­5x³y⁴ ­- 5 x³ y³

1. 5x² + 4x³ + 3x²
2. -­5x³y² ­- 5 x³ y -­ 5x³ y³
3. 5xy - 7xy + 11xy
4. -­5x³ + 5xy

Answer 1

Correct Answer - Option 3 : 5xy - 7xy + 11xy

Calculation 

5x2 + 4x3 + 3x2, - In this equation power of x is different in each term

5xy - ­7xy + 11xy - In this equation power of x and y is same in each term 

-­5x3 y2 - ­5x3y4 ­- 5 x3 y³ - In this equation power of x and y is different in each term 

So, 5xy - ­7xy +11xy contains like term 

∴ The required answer is 5xy - ­7xy + 11xy