In 2012, a school enrolled 5x² + 3x + 7 students. Out of these, 3x² - 4x + 3 students were girls. How many boys were enrolled?
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Step-by-step explanation:
Total no. of students: 5x²+3x+7
No. of girls : 3x²-4x+3
No. of boys: 5x²+3x+7-(3x²-4x+3)
=5x²+3x+7-3x²+4x-3
=5x²-3x²+3x+4x+7-3
=2x²+7x+4
Therefore number of boys were enrolled is 2x²+7x+4
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