Linear Equation 6

From Homeworkwiki

Jump to: navigation, search

Solve: (3x + 1)2 + (4x + 1)2 = (5x + 1)2 + 5

Solution:(3x + 1)2 + (4x + 1)2 = (5x + 1)2 + 5

=> 9 x2 + 6 x + 1 + 16 x2 + 8 x + 1 = 25 x2 + 10 x + 1 + 5

=> 25 x2 + 14 x + 2 = 25 x2 + 10 x + 6

=> 14 x - 10 x = 6 - 2

=> x = 1

Personal tools
McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams