Answer:
No real roots.
Step-by-step explanation:
Discriminant = b^2 - 4ac ( for the equation ax^2 + bx + c = 0)
Here it is 4^2 - 4*1*8
= `6 - 32
= -16.
This is negative so there are no real roots.
Answer:
4
Step-by-step explanation:
pythagoras theorem = a* + b* = c* ( by '*' i mean squared)
2* + b* = square root twenty
4 + b* = 20
b* = 16
b = 4
When x=1, 7x+3 = 10.
When x=2, 7x+3 = 17.
When the value of 'x' changes from '1' to '2', the value of 7x+3 changes
from '10' to '17' . . . a distance of '7' .
That's what the ' 7x ' in the equation means, and that's what we mean
when we say that the 'slope' of the equation is '7'. 'y' changes '7' for
every '1' that 'x' changes.
<h3>Answer:</h3>
1 . . . . . . matches the last selection
<h3>Explanation:</h3>
<em>Any non-zero value</em> raised to the zero power is 1.