Question

pls give answer fast​

Answer 1

Answer:

1) x²-20x-300=0

2) 30

3) 20

4) 1200

Step-by-step explanation:

1) 2x(x-10) =(x²+300)

2x²-20x=x²+300

=x²-20x-300=0

2) x²-20x-300=0

(x-30) (x+10) =0

x=30, -10

x=30

4)x²+300

=900+300

=1200