Her answer is wrong because the product of 78.112 = 8736.
the discriminant b^2 - 4ac when the equation is in the form of ax^2 +bx+c=0
13x^2-16x = x^2 -x
we need to get in it the standard form
subtract x^2 from each side
12x^2 -16x = -x
add x to each side
12x^2 -15x = 0
12x^2 -15x -0 =0
a=12 b=-15 c=0
b^2 -4ac
the discriminant = b^2
b^2 = (-15)2 = 225
Answer:
eleven r plus seven s
Step-by-step explanation:
thats the written form
27|405 27*1=27
- 27 27*5=135
-------
135
-135
--------
0
Answer is 6 :v
