Question

25x (в квадрате) -10х-3

Answer 1

25x²-10x-3=0
D=b²-4ac
D=100+300=400
x=

Answer 2

25х^2-10x-3=0
D=b2-4ac
D=100-4*25*(-3)=400
x1=-b+Корень с D/2a=10+20/50=0,6
x2=-b-Корень с D/2a=10-20/50=0,2

Answer 3

To simplify the expression 25x² - 10x - 3, you can use the quadratic formula:

x = (-b ± sqrt(b^2 - 4ac)) / 2a

where a = 25, b = -10, and c = -3.

Plugging in the values, we get:

x = (-(-10) ± sqrt((-10)^2 - 4(25)(-3))) / 2(25) x = (10 ± sqrt(100 + 300)) / 50 x = (10 ± sqrt(400)) / 50 x = (10 ± 20) / 50

So the two solutions are:

x = (10 + 20) / 50 = 3/5 x = (10 - 20) / 50 = -1/5

Therefore, the simplified expression is:

25x² - 10x - 3 = 25(x - 3/5)(x + 1/5)