Solve using the quadratic formula (you must show work) 52 − 2 + 1 = 0

see below

Step-by-step explanation:

we have

and the quadratic equation is

so we can see that

and the quadratic formula is

it should go this symbol ± instead of +-

so we insert each value

i don't know if you already know about imaginary numbers if you do then the answer is all the work

if you don't know, well just go until

and say there is no answer to this, because negatives don't have square roots

the answer is b.

step-by-step explanation:

you are playing an adventure game on your computer. you come across a troll who won't let you pass and there is no other way to get to the other side of the river except over the bridge he is guarding.

the troll is a nerd. he takes great delight in watching people struggle with his problems. very few get them. he only gives you one chance and then he changes the puzzle. you have to solve this one.

before you are four blocks. they are numbered 11,6, -7,21.

he tells that the answer he wants is minus and between -1 and - 2. you can use +, -, ×, ÷   ( and ) as many times as you like or no times at all. you don't like the way he's looking at you, but you need to cross the bridge. what do you do?