thea81 thea81
  • 01-12-2018
  • Mathematics
contestada

Help me factorise (2x-1)^2-(3x+6)^2 . Please explain your answer too, thank you xx

Respuesta :

jimrgrant1 jimrgrant1
  • 01-12-2018

Answer:

- 5(x + 1)(x + 7)

Step-by-step explanation:

Expand the given factors in the expression

= 4x² - 4x + 1 - (9x² + 36x + 36 )

= 4x² - 4x + 1 - 9x² - 36x - 36 ( collect like terms )

= - 5x² - 40x - 35 ( factor out - 5 from each term )

= - 5(x² + 8x + 7) ( factor the quadratic )

= - 5(x + 1)(x + 7)


Answer Link

Otras preguntas

Water is considered a _______ resource. Oil, coal, and natural gas are considered _______ resources. _______ energy is able to be replaced within the ecosystem
I DON’T GET THIS ONLY NEED NUMBER 6 PLEASEEE!!!!!
• After retirement, Lori's grandfather volunteered Mondays, Wednesdays, and Fridays at a local library. verb indirect object clause subject direct object phrase
Valerie used the distributive property to write an equivalent expression. What is Valerie's error? 12 + 32 = 4(1 + 10) O Valerie wrote two expressions that are
Alberto lee (reads) un libro la cafetería el estadio la biblioteca el salón de clase el auditorio
What is the shape of the cross section?
If x is a whole number and 437 = (21 + x)(21 - x), then x =
The unit dosing machine packages medication based on the
Which groups fought for control of Indonesia after World War II?
Suppose a random sample of 64 men has a mean foot length of 27.5 cm with a deviation of 2 cm. Construct a 95% confidence interval for the mean of the population