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melamori03 [73]
3 years ago
5

What is the factor of

{x}^{2} - 6x - 27" alt=" {x}^{2} - 6x - 27" align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
Ksju [112]3 years ago
6 0

Answer:

(x - 9)(x + 3)

Step-by-step explanation:

Given

x² - 6x - 27

Consider the factors of the constant term (- 27) which sum to give the coefficient of the x- term (- 6)

The factors are - 9 and + 3, since

- 9 × 3 = - 27 and - 9 + 3 = - 6, thus

x² - 6x - 27 = (x - 9)(x + 3)

andreyandreev [35.5K]3 years ago
5 0

Answer:

9 is correct answer

Step-by-step explanation:

{x}^{2}  - 6x - 27 \\  =  {x}^{2}  - 9x + 3x - 27 \\  =  x(x - 9) + 3(x - 9) \\  = (x + 3)(x - 9)

x=9

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