wazmastocks10 wazmastocks10
  • 20-11-2021
  • Mathematics
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Factorise x2 - 10x + 21

Respuesta :

Kakitzu
Kakitzu Kakitzu
  • 20-11-2021

To factor, we need to find out which 2 numbers add up to -10 and multiples to be 21.

The factors of 21 are 1, 3, 7, 21.

From there, we can conclude that -3 + -7 = -10 and -3 * -7 = 21

Hence when you factor the expression, you get:

(x-3)(x-7)

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