Mathematics
Easy

Question

# What is the value of the expression x1 + 5x + 3 where the value of x is 5?

## 28    33    100    20 Hint:

## The correct answer is: 28

### The given expression is x1+ 5x + 3There is one variable in the above expression. The variable is: ‘x’. Value assigned to the variable is x = 5. We have to substitute this value and find the final value of the expression.There are two terms in the above expression. The first term is ‘x1'. It means x is taken one time.The second term is ‘5x’. It means variable x is multiplied by constant 5.Third term is constant.We have to first substitute the value and perform the required operations.To substitute the value, we have to replace x by 5. After substituting the value, we will get the following equation:x1+ 5x + 3 = x + 5x + 3x1+ 5x + 3 = (5) + 5(5) + 3x1+ 5x + 3 = 5 + 25 + 3x1+ 5x + 3 = 33Therefore, the value of equation is 33.So option (b), which is ‘33’ is the right option.

We have to be careful about power of variables.

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