Answer:
49
Step-by-step explanation:
when -7 * -7 is done, the minuses will cancel to make a plus, thus you will get 49
4k + 17 = 1 move constant to the right
4k =1 - 17 calculate
4k = -16 divide both sides by 4
answers k= - 4
the solution is k = - 4
18. 4x^1/4
hope this helps!
didnt know about 20. but im confident u can figure it out!
Well I can’t say anything