Q1 of 62 Page 157

Divide the first polynomial by the second. Explain the steps.

78x4; –7x2

The division is as follows:



Here when -7x2 is multiplied by -4x2 we get -28x4 as the result.


Here the divisor is negative so the quotient has to be negative to get remainder zero.


In division the sign of the product [divisor × quotient] is always inverted to get the final result.


So the sign of product should always be opposite to that of the dividend.


So -28x4 becomes perfectly divisible by -7x2 and hence the quotient is -4x2 and remainder is 0.


More from this chapter

All 62 →