The discriminant for the quadratic is b2-4ac = 302 - 4*4*45 = 900 - 720 = 180
Since 180 is not a perfect square, the roots of the equation are irrational and it is far from straightforward to solve such an equation by factoring.
2(5x - 1)(3x - 2)
15x2 - 30x -720 = 15(x - 8)(x + 6).
-30x=6.3 x=-.21
For the equation: x5+7x3-30x=0 The highest exponent in the entire equation is 5 (from x5), so the equation is of degree 5.
24 - 13x + 5 = 30x + 5 - 3x is the same as 24 - 13x + 5 = 27x + 5 is the same as 29 -13x = 27x + 5 is the same as -13x -27x = 5 -29 is the same as -40x = -24 is the same as 40x = 24 is the same as 5x = 3
2(5x - 1)(3x - 2)
15x2 - 30x -720 = 15(x - 8)(x + 6).
Pressumably you want to solve for "x". Divide left and right by minus 30. That will leave the "x" alone on the left, and the answer on the right.
-30x=6.3 x=-.21
That can be factored to (3x - 5)(3x - 5) or (3x - 5)2
That's 35 - 30x. The GCF of 35 and 30x is 5.
For the equation: x5+7x3-30x=0 The highest exponent in the entire equation is 5 (from x5), so the equation is of degree 5.
24 - 13x + 5 = 30x + 5 - 3x is the same as 24 - 13x + 5 = 27x + 5 is the same as 29 -13x = 27x + 5 is the same as -13x -27x = 5 -29 is the same as -40x = -24 is the same as 40x = 24 is the same as 5x = 3
x = 0.666666666666667 so 100 + (30x0.67) + (30x0.67) = around 180
31x
For example ?x+20=50x then solve: 50x-20=30x 30x/x=30 then the answer is 30 you just have to dived the answer by x
1. 6x - 5y = 22 2. 5x - 9y = -1 1 times 5: 30x - 25y = 110 2 times 6: 30x - 54y = -6 Subtract : 29y = 116, so y = 4 and x therefore = 7