Answer:
x=(
−
2
/7
,
0
)
y= (
0
,
-
2
)
Step-by-step explanation:
Answer:
Step-by-step explanation:
-16x^2 + 32x + 2 = 0
Using the quadratic formula:
x = [-32 +/- sqrt((32^2 - 4*-16*2) / (2*-16)
= 1 +/- sqrt (1152)/(-32)
= -0.06, 2.06.
X-4y=-11<=> -5x + 20y = 55
<span> 5x - 7y = -10</span>
=>0*x + 13*y = 45 => y =45/13 => x = 4*(45/13) -11 = 180/13 -11 =>
x = 37/13;
Answer:
o,5,10
Step-by-step explanation:
Answer:
x = 4 ±√26
Step-by-step explanation:
Please write this as x^2 - 8x = 10, or x^2 - 8x - 10 = 0. " ^ " indicates exponentiation.
Let's complete the square:
x^2 - 8 x can be rewritten as
x^2 - 8x + 16 - 16, and so
x^2 - 8x = 10 becomes x^2 - 8x + 16 - 16 - 10 = 0, or
(x - 4)^2 = 26
Taking the square root of both sides, we get:
x - 4 = ±√26, or
x = 4 ±√26
