Solve this linear equation:(a+4)²-(a-5)² = 9 – InterviewSolution

1.	Solve this linear equation:(a+4)²-(a-5)² = 9
Answer» Answer is 16Step-by-step explanation:(a+4)²-(a-5)²=9 this is a PROPERTY (a+b)²= a²+2ab+b² therefore, a²+8a+16-a²-10a +25=9 -2a+41=9 -2a =9-41 -2a= -32 a= -32/-2 a= 16 PLZ comments this USEFUL or not

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