Express x2- 8x + 5 in the form (x -a)2-b where a and b are integers.
2 answers:
Answer:
Step-by-step explanation:
x² - 8x + 5 = x² - 8x + (16 - 16) + 5 {we just added 16 and subtractEd it }
= (x - 4)² - 16 + 5 {<u><em>Reason </em></u>: x² - 8x + 16 = (x - 4)² }
= (x - 4)² - 11
Answer:
(x - 4)² - 11
Step-by-step explanation:
Given
x² - 8x + 5
To obtain the required form use the method of completing the square.
add/subtract ( half the coefficient of the x- term)² to x² - 8x
= x² + 2(- 4)x + 16 - 16 + 5
= (x - 4)² - 11
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Answer:
10%
Step-by-step explanation:
To find this we make a fraction and multiply by 100%
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<em>I hope this helps! :)</em>
Answer:
Step-by-step explanation:
The last option is the answer
Answer:
-19
Step-by-step explanation:
- According to bedmas rules, we have to first solve the brackets.
-4(3)+(-7)
-12 + (-7)
-12 + (-7)
-12 - 7
= -19
