4n-20n+25
(2x - 5)(2x - 5)
If you mean:0 = 800 - 10x + 25 * 20 = 800-10x+25*210x = 800+50x = 8,50 = 800 - 10x + 25 * x * 20 = 800 - 10x + 50x-800 = 40x-50 = x
64x2-80x+25 = (8x-5)(8x-5) when factored
49x²+70x+25 = (7x+5)² since the root (-70/(2*49)) of the quadratic equations is -5/7 (discriminant = 70²-4*49*25 = 0)
(4x + 5)(4x + 5)
4x+516x2 + 40x + 25= (4x + 5) (4x + 5)
(4x+5)(4x+5)
16x2 - 25 = (4x + 5) ( 4x - 5)
16x2 - 25 = (4x + 5) (4x - 5)
40x+16=2540x=25-1640x=9x= 9/40x=0.225
4n-20n+25
A trinomial of the form ax2 + bx + c , where a is a square, c is a square and b = 2(sq root a)(sq root b). b can be a negative also. ex: x2 + 6x + 9 , note a = 1 or 16x2 - 40x + 25
x2 + 10y + 25 doesn't factor neatly. If that was x2 + 10x + 25, it would factor to (x + 5)(x + 5) or (X + 5)2
4x2+20x+25 (2x+5)^2
362+60x+25 (6x+5)(6x+5)
16x2 - 25 is a quadratic polynomial which defines the function f(x) = 16x2 - 25, whose graph is a parabola. Since the x-term is missing, then the y-axis is also the axis of symmetry. When x = 0, then f(x) = -25, so that (0, -25) is the y-intercept point, which also is the vertex of the parabola (the vertex lies on the symmetry line). When f(x) = 0, we have 16x2 - 25 = 0 factor the difference of the two squares (4x - 5)(4x + 5) = 0 let each factor equal to zero 4x - 5 = 0 or 4x + 5 = 0 x = 5/4 or x = -5/4 Thus, (-5/4, 0) and (5/4, 0) are the x-intercepts points. Plot the points on a coordinate system and draw the parabola that passes through them.