Q. Divide. If there is a remainder, include it as a simplified fraction.(4z2+9z−9)÷(z+3)
Divide Leading Terms: We will use polynomial long division to divide (4z2+9z−9) by (z+3). First, we divide the leading term of the numerator, 4z2, by the leading term of the denominator, z, to get the first term of the quotient. 4z2÷z=4z
Multiply and Subtract: Now, we multiply the entire divisor (z+3) by the first term of the quotient (4z) and subtract the result from the original polynomial.(4z)(z+3)=4z2+12zSubtract this from the original polynomial:(4z2+9z−9)−(4z2+12z)=−3z−9
Divide New Leading Term: Next, we divide the new leading term of the remainder, −3z, by the leading term of the divisor, z. −3z÷z=−3
Multiply and Subtract: We multiply the entire divisor (z+3) by the new term of the quotient (−3) and subtract the result from the current remainder.(−3)(z+3)=−3z−9Subtract this from the current remainder:(−3z−9)−(−3z−9)=0
Check Remainder: Since the remainder is 0, we have finished the division process. The quotient is the sum of the terms we found: 4z−3.
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