Question

1,5х-4х²=6,3х-4х х²+3,5х-2=0

Answer 1

5x
2+ 3x =0
X(5 x +3) = 0
X=0
Cx+1=0
X=0
X=-で
Xニー
3 , X150

Answer 2

To solve the given equations, let's work on each one separately:

1. 1.5x - 4x² = 6.3x - 4x

Rearranging the terms, we have: 1.5x - 6.3x + 4x² - 4x = 0

Combining like terms: -4.8x + 4x² = 0

Factoring out 'x' from both terms: x(-4.8 + 4x) = 0

Setting each factor equal to zero and solving for 'x': x = 0 or -4.8 + 4x = 0

For the second equation: -4.8 + 4x = 0 4x = 4.8 x = 4.8/4 x = 1.2

So, the solutions for the first equation are x = 0 and x = 1.2.

2. x² + 3.5x - 2 = 0

This is a quadratic equation, which can be solved using factoring, completing the square, or the quadratic formula. In this case, let's use the quadratic formula:

x = (-b ± √(b² - 4ac)) / (2a)

For the equation x² + 3.5x - 2 = 0, we have: a = 1, b = 3.5, c = -2

Substituting the values into the quadratic formula: x = (-(3.5) ± √((3.5)² - 4(1)(-2))) / (2(1)) x = (-3.5 ± √(12.25 + 8)) / 2 x = (-3.5 ± √(20.25)) / 2 x = (-3.5 ± 4.5) / 2

We have two possible solutions: x = (-3.5 + 4.5) / 2 = 1 / 2 = 0.5 x = (-3.5 - 4.5) / 2 = -8 / 2 = -4

Therefore, the solutions for the second equation are x = 0.5 and x = -4.