use quadratic formula: (-b±√(b^2-4ac))/2a
a=3 b= -7 c=-2
3𝑥^2-7𝑥-2=0
calculator keeps saying math error when i apply the formula?
+9479 If you just want to know how to put this in the calculator..........
x = ( -b ± √( b^2 - 4ac ) ) / ( 2a ) Make sure " 2a " is in parenthesees, otherwise the " a " goes in the numerator.
x = ( -(-7) ± √( (-7)^2 - 4(3)(-2) ) ) / ( 2(3) )
You can type it, or just copy and paste this, into the calculator on the home page like this...
First solution: ( -(-7)+sqrt((-7)^2-4(3)(-2)))/(2(3))
Second solution: ( -(-7)-sqrt((-7)^2-4(3)(-2)))/(2(3))
So...you should get
x ≈ 2.591 and x ≈ -0.257
+9479 If you just want to know how to put this in the calculator..........
x = ( -b ± √( b^2 - 4ac ) ) / ( 2a ) Make sure " 2a " is in parenthesees, otherwise the " a " goes in the numerator.
x = ( -(-7) ± √( (-7)^2 - 4(3)(-2) ) ) / ( 2(3) )
You can type it, or just copy and paste this, into the calculator on the home page like this...
First solution: ( -(-7)+sqrt((-7)^2-4(3)(-2)))/(2(3))
Second solution: ( -(-7)-sqrt((-7)^2-4(3)(-2)))/(2(3))
So...you should get
x ≈ 2.591 and x ≈ -0.257
