Take everything to one side and equate it to zero
So: 5x^2 -x -1=0
Next factorise so it’s 5(x^2-1/5)-1=0
So: 5(x-1/5) ^2 -1=0
So complete the square
First of all remove the five by division (x- ((1/5)/2)^2+ (1/5/2)^2 ) -1 =0
So (x- 1/10)^2 +1/5 +1/100 =0
Answer is (x-1/10)^2 -21/100 =0
Take -21/100 to the other side so:
(x-1/10)^2 = 21/100
Square root both sides so
(X-1/10) = square root of 21/100
Take -1/10 to the other side so
X= 1/10 + square root of 21/100
The guy above did you dirty
18a+15
making a subject of formular
a=18-15
=3
Answer:
10cm
Step-by-step explanation:
Assuming the shape is a rectangle since it's already stated that it's a parallelogram, and the area is stated, we can use the Pythagorean theorem to find the length
, where c will be the length
isolate c
substitute for a and b
Answer:
For Monday 2) x = 1
Step-by-step explanation:
1/4x + 3 = 1/2x - 1
1/4x - 1/4x + 3 = 1/2x - 1/4x -1
3 + 1 = 1/4x -1 + 1
4 = 1/4x
(1/4) 4 = 1/4x (1/4)
