Put the coordinate and check each
#1
No
#2
Unless you did typing mistake on right hand side it's
#3
Yes
#4
#5
#6
Answer:
1.
-25+0
-30+5
2.
-15-10
-20-5
8x^2 -3 = 2
add 3 to each side
8x^2 = 5
divide by 8
x^2 =5/8
take the square root of each side
x = +- sqrt (5/8)