Answer:
Question 11 is correct (7.9).
Question 12 is not 8.3, it is 9.6.
Step-by-step explanation:
Plz help me solve this and in the blue arrows you put inequality signs
1 answer:
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C
expand factors, sum like terms and divide by 2
(x + 2)² + (x - 2)² = x² + 4x + 4 + x² - 4x + 4 = 2x² + 8
(2x² + 8 ) = x² + 4 → C