The third one pls mark me brainliest
Answer:
x²+5x-49
Step-by-step explanation:
-7² -x+6x+x²
combine like terms
-x+6x is 5x
simplify -7² is -49
now rewrite the equation
x²+5x-49
Step-by-step explanation:
x+9-10=500
x-1=500
x=500+1=501
Answer:
im so sorry i dont know what this is about i suck at math but best of luck to you
Step-by-step explanation: