b1az3:
Solve the following system. y = -2x 2 + 3x - 1 and x + y = -1. The solutions are and
imqwerty:
Where are you stuck?
b1az3:
yes
imqwerty:
no
jhonyy9:
y = -2x^2 +3x -1 x+y = -1 what method you wan - need using to solve it ? substitution ,elimination,...?
b1az3:
it just askes this Solve the following system. y = -2x 2 + 3x - 1 and x + y = -1. The solutions are and
jhonyy9:
so the most easy way to use it the substitution method bc. there given a value of y what you can substitute it inside the second equation in place of y and solve it for x
imqwerty:
^
jhonyy9:
@AZ any idea ? ty
jhonyy9:
@b1az3 do you understand the way ?
b1az3:
no
jhonyy9:
y = -2x^2 +3x -1 this expression of y you need substitute it in place of y inside second equation
jhonyy9:
so what will get ?
jhonyy9:
@imqwerty do you have any idea ?
jhonyy9:
x +y = -1 x +(-2x^2 +3x -1) = -1 solve this for x
imqwerty:
^
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