(sqrt 5 - sqrt 7) (sqrt 5 - sqrt 8) Multiply at Pasimplehin?

(sqrt 5 - sqrt 7) (sqrt 5 - sqrt 8) Multiply at Pasimplehin?
Anonim

Sagot:

# (sqrt5-sqrt7) (sqrt5-sqrt8) = kulay (asul) (5-2sqrt10-sqrt35 + 2sqrt14 #

Paliwanag:

# (sqrt5-sqrt7) (sqrt5-sqrt8) #

Gamitin ang FOIL na paraan.

# (sqrt5sqrt5) - (sqrt5sqrt8) - (sqrt5sqrt7) + (sqrt7sqrt8) #

Pasimplehin.

# 5-sqrt40-sqrt35 + sqrt56 #

Pangunahin ang mga radic.

# 5-sqrt (2 * 2 * 2 * 5) -sqrt (5 * 7) + sqrt (2 * 2 * 2 * 7) #

Pasimplehin.

# 5-2sqrt10-sqrt35 + 2sqrt14 #