Answer:
B
Step-by-step explanation:
it's a dots equation.
The error is that
Instead, it should be 4⁴ - 4³ = 256 - 64 = 192.
The length of the diameter is:
16 metres
Answer:
2nd option
Step-by-step explanation:
The discriminant b² - 4ac tells us about the nature of the roots
• If b² - 4ac > 0 then 2 real and distinct roots
• If b² - 4ac = 0 then 2 real and equal roots
• If b² - 4ac < 0 then the roots are not real
Here b² - 4ac = 15 > 0
Then there are 2 real and distinct roots
x = 2 and x = - 3 are possible solutions to the equation