bibhavshrestha100 bibhavshrestha100
  • 09-08-2020
  • Mathematics
contestada

Factorise : x^2-9x-70 Step by Step​

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saraharif006
saraharif006 saraharif006
  • 09-08-2020

Answer:

Step-by-step explanation:

x^2 - 9x - 70

we need to find two numbers whose sum is -9 and product id -17

The numbers are -14 and 5

By splitting the middle term,

x^2 - 14x + 5x - 70

= x ( x - 14 ) + 5 ( x - 14 )

( x + 5 ) ( x - 14 )

Hope this helps

Plz mark as brainliest!!!!!

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devishri1977
devishri1977 devishri1977
  • 09-08-2020

Answer:

Step-by-step explanation:

Sum = -9

Product = -70

Factors = -14 , 5

x² - 9x - 70 = x² + 5x - 14x + (-14) * 5

                  =x(x + 5) - 14(x + 5)

                  = (x + 5)(x - 14)

Answer Link

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