Question

(х+5)в квадрате -2х умножить (3-4 х)

Answer 1

(x+5)²-2x(3-4x)=x²+10x+25-6x+8x²=9x²+4x+25

Answer 2

To simplify the expression, let's expand the terms and then combine like terms:

First, let's expand (х + 5) squared: (х + 5) squared = (х + 5) * (х + 5) = х * х + 5 * х + 5 * х + 5 * 5 = х^2 + 10х + 25

Next, let's expand -2х * (3 - 4х): -2х * (3 - 4х) = -2х * 3 + -2х * (-4х) = -6х + 8х^2

Now, the full expression is: (х + 5)^2 - 2х(3 - 4х) = х^2 + 10х + 25 - 6х + 8х^2

Finally, let's combine like terms: = (х^2 + 8х^2) + (10х - 6х) + 25 = 9х^2 + 4х + 25

So, the simplified expression is 9х^2 + 4х + 25.