solve 56 66a

solve

1) | x²+x+1|=3

2) |x|^x²-x-2=1

7 Answers

answer for one is 2 solutions

modulus sign doesnt matter

so solve the quadratic

x^2+x-2=0

for second 3 solutions x=2 ,x=1,x=-1

x2+x+1=-3..........(1)
x2+x+1=3....(2)

now solve the eqns...first gives non-real roots

why modulus sign doesnt matter?

@avinav that modulus sign doesnt matter as any how the expression inside modulus is always +ve...........

how?

because D<0 and a >0

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