Question

FACTORIZE x2 - 10 x + 21 = 0 *


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Answer 1

$(x - 7) \times (x - 3) = 0 \\ x = 7 \: \: \: \: \: \: \: x = 3 \\ hope \: it \: is \: useful....$

Answer 2

x² - 10x + 21 = 0

x² - 7x - 3x + 21 = 0

x ( x - 7 ) -3 ( x - 7 ) = 0

( x - 7 ) ( x - 3 ) = 0

x = 7 , 3 ➡ Answer