0
x2+8x+9 = -7
x2+8x+9+7 = 0
x2+8x+16 = 0
(x+4)(x+4) = 0
Therefore: x = -4 and also x = -4 (they both have equal roots)
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∙ 14y ago
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X2 plus 8x plus 10 equals 3?
(x+ 7)(x + 1) so x = -1 or -7
What is the product of the roots of x2 - 8x plus 7 equals 0?
The roots are: x = 1 and x = 7 So: 7*1 = 7
X2 8x 9 equals -7?
x=-1
What are the possible values of k in the line y equals kx -2 which is tangent to the curve y equals x squared -8x plus 7?
The possible values for k are -2 and -14 because in order for the line to be tangent to the curve the discriminant must be equal to 0 as follows:- -2x-2 = x2-8x+7 => 6-x2-9 = 0 -14x-2 = x2-8x+7 => -6-x2-9 = 0 Discriminant: 62-4*-1*-9 = 0
7y plus 8x plus 4 equals 20 plus 8x?
7y+ 8x + 4= 20 + 8x- 8x - 8x7y + 4 = 20- 4 - 47y=16/7 /7y= 2.28the /7 means divide by 7 :)
Calculate the roots of X2 plus 8X equals -7?
x=-0.7
X2 plus 8x plus 10 equals 3?
(x+ 7)(x + 1) so x = -1 or -7
What is the product of the roots of x2 - 8x plus 7 equals 0?
The roots are: x = 1 and x = 7 So: 7*1 = 7
X2 8x 9 equals -7?
x=-1
An equation of the axis of symmetry of the graph y equals -x2 plus 8x-7?
y = x2 + 8x - 7 a = 1, b = 8, c = -7 the equation of the axis of symmetry: x = -b/2a x = -8/(2*1) = -4
8x-7 plus 2x equals 6 plus 5x plus 2?
8x-7 plus 2x equals 6 plus 5x plus 2?
What is the real solution for the equation x2-8x-4 equals 0?
I'll show work. X2-8x-4=0. X2-8x=4. X-8x=2. -7x=2. X=-(2/7).
What is 7 plus 8x 6 equals?
55
What are the possible values of k in the line y equals kx -2 which is tangent to the curve y equals x squared -8x plus 7?
The possible values for k are -2 and -14 because in order for the line to be tangent to the curve the discriminant must be equal to 0 as follows:- -2x-2 = x2-8x+7 => 6-x2-9 = 0 -14x-2 = x2-8x+7 => -6-x2-9 = 0 Discriminant: 62-4*-1*-9 = 0
7y plus 8x plus 4 equals 20 plus 8x?
7y+ 8x + 4= 20 + 8x- 8x - 8x7y + 4 = 20- 4 - 47y=16/7 /7y= 2.28the /7 means divide by 7 :)
8x-7 plus 2x equals 6 plus 5x plus 2 equals?
DIE
8x - y equals 54 and 8x plus 2y equals 60?
x=7 and y=4
