M maniac New member Joined May 8, 2011 Messages 1 May 8, 2011 #1 Solve the simultaneous equations y ? 3x + 2 = 0 y2 ? x ? 6x2 = 0 the number 2 after 6x represents squared. thankyou guys!
Solve the simultaneous equations y ? 3x + 2 = 0 y2 ? x ? 6x2 = 0 the number 2 after 6x represents squared. thankyou guys!
D Denis Senior Member Joined Feb 17, 2004 Messages 1,700 May 8, 2011 #2 maniac said: y ? 3x + 2 = 0 y2 ? x ? 6x2 = 0 Click to expand... y - 3x + 2 = 0 [1] y^2 - x - 6x^2 = 0 [2] : use ^ for "squared" From [1]: y = 3x - 2 Substitute in [2] to get a quadratic : solve it for x; from that, get y by substituting x in [1]
maniac said: y ? 3x + 2 = 0 y2 ? x ? 6x2 = 0 Click to expand... y - 3x + 2 = 0 [1] y^2 - x - 6x^2 = 0 [2] : use ^ for "squared" From [1]: y = 3x - 2 Substitute in [2] to get a quadratic : solve it for x; from that, get y by substituting x in [1]
