Answer:

1. X€ (-6,5)

2. X€null

Step-by-step explanation:

1. x²+4x<3+3x+27

x²+4x<30+3x

x²+4x-30-3x <0

x²+x-30 <0

x²+6x-5x-30 <0

x (x+6)-5x-30 <0

x(x+6)-5 (x+6) <0

(x+6) (x-5) <0

x+6=0 x-5=0

x=-6 x=5

= x€ (-6,5)

2.x²+25-10x <0

x²-10x+25 <0

(x-5)² <0

since the left side is always positive or 0, the statement is false for any value of x

=X€null. yong symbol po ng null is circle siya na nay pa slant na hiwa sa gitna.