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The discriminant is b^2-4ac
ax^2+bx+c=0
x^2+11x-10=0
11^2-4(1)(-10)
1. Simplify 11^2 to 121
121-4(1)(-10)
2. Simplify 4*1*-10 to -40
121-(-40)
3. Simplify brackets
121+40
4. Simplify
161
Your discriminant is 161
Answer:
The number is 58.8
Step-by-step explanation:
Let
x -----> the number
we know that
The number 98 represent the 100%
so
using proportion
Find out what number represent the 60% of 98
Answer:
(2,-9)
Step-by-step explanation:
Multiply out the polynomial to get:
x^2-4x-5
the vertex formula is -b/2a (use the coefficients of the equation above)
-(-4)/2(1) = 4/2 = 2
we know the x value of the vertex is 2. Now we can plug that into the original equation to get the y value.
(2-5)(2+1)
(-3)(3) = -9
so the coordinate is (2,-9)
Answer: 56$ in total
Step-by-step explanation: You just simply add $24 + 8$ and it will equal to 32 and then add 24 because of his brother which is 56 dollars in total
