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Answers
Answer:
I). −x²+x+2=0
Common factor
-(x²-x-2)=0 Divide both sides of the equation by the same term
Use the quadratic formula
x= -b±√b²-4ac/2a
Once in standard form, identify a, b and c from the original equation and plug them into the quadratic formula.
(x²-x-2)=0
a=1,b=-1,c=-2 --->. by applying this to the formula we get x= -(-1) ± √(-1)²-4.1(-2)/2.1
simplify:
x=1±3/2
Separate the equations :
To solve for the unknown variable, separate into two equations: one with a plus and the other with a minus
we get, x=1+3/2. x=1-3/2
Solve:
Rearrange and isolate the variable to find each solution. x=2. x=-1
x=2,-1 =====>. Solution
ii). √3x²+10x-8√3 =0
√3x²+6x+4x-8√3 =0
√3x(x+2√3)-4(x+2√3) = 0
x=-2√3,4/√3 ====>solution
iii). x=-1/√5,√5/2 ====> solution
iv). x=5/3,-1 ====> solution
Answer: