simulateous equations

maniac

New member
Joined
May 8, 2011
Messages
1
Solve the simultaneous equations
y ? 3x + 2 = 0
y2 ? x ? 6x2 = 0

the number 2 after 6x represents squared.

thankyou guys!
 

Denis

Senior Member
Joined
Feb 17, 2004
Messages
1,445
maniac said:
y ? 3x + 2 = 0
y2 ? x ? 6x2 = 0
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]
 
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