Find a solution for the following simultaneous equations: 2x+y=5 and 2x-5y=2
Subtract the 2nd equation from the first: 2x--2x+y+6y=5-2 <=> 7y=3 <=> y=3/7Input the value of y into one of the equations: 2x+3/7=5 <=> 2x=(35-3)/7 <=> x=16/7
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n is an integer such that 4n+6≤18 and 5n/(n^2+4)>1. Identify the range of possible values of n.
Use the quadratic formula to find the solutions to x^2+2x-35=0
Expand and simplify: (5w-6)(2w+7)