Question

3. How many solutions does the system have? }
Sy = x2 + 4x – 2
1 y = 2x+1

Answer 1

Hence two solution of expression

I.e x= 1 , - 3

Explanation:

Given as :

y = x² + 4 x - 2

And y = 2 x + 1

Solving these equation

x² + 4 x - 2 = 2 x + 1

or, x² + 4 x - 2 - 2 x - 1 = 0

Or, x² + 2 x - 3 = 0

Or, x² + 3 x - x - 3 = 0

Or, x ( x + 3 ) -1 ( x + 3 )= 0

Or, ( x + 3 ) ( x - 1 ) = 0

or, x = - 3 And x = 1

Hence two solution of expression Answer