40 points need fast(sqrt is a radical) 1.)simplify: sqrt425 sqrt628 sqrt128 2.)add: -2sqrt7+3sqrt7 3.)subtract: -3sqrt12-3sqrt3-3sqrt20 4.)multiply: 3sqrt3(3sqrt8) 3sqrt3(4-3sqrt5)

1)5sqrt17,2sqrt157,8sqrt2

2)sqrt7

3)-3(3sqrt3+2sqrt5)

4)18sqrt6,12sqrt3-9sqrt15

i think is 3 and 6. this took me 10 min to think.hope to and hope that my answer is brainliest.(follow me )

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation: