The discriminant is <span>−<span>8
</span></span>f<span>(x)</span>=−3<span>x2</span>−2x−1
is of the form <span><span>a<span>x2</span>+bx+c</span>
</span>,with <span><span>a=−3</span>
</span>, <span><span>b=−2</span>
</span> and <span>c=−<span>1</span></span>
Answer:
£70
Step-by-step explanation:
There are ten people and each person pays £56 so the total cost will be 10x£56 = £560
The boat will be hired out for the same price (£560) and there are eight people this time, so £560 divided by 8 = £70. This means each person will pay £70.
145,973 Is decimaled in 145.
14.5
1.45
.145
Answer: Yes, radicals can be rationals.
Step-by-step explanation:
Yes, a radical can be rational.
If a square root is a perfect square, you will obtain an integer, and by definition, the integer are rationals (they can be written as simple fractions).
Example:

If the radical has a root <em>n </em>and number inside of the root can be written as a power with exponent
, then you will obtain a radical.
Example:
![\sqrt[3]{64}=\sqrt[3]{4^{3}}=4=\frac{4}{1}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B64%7D%3D%5Csqrt%5B3%5D%7B4%5E%7B3%7D%7D%3D4%3D%5Cfrac%7B4%7D%7B1%7D)
general equation of circle is:

so centre is (0,0) and radius is
