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Linaandlesa
@Linaandlesa
May 2019
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Bonsoir aidez-moi à faire l'exercice :
1.compléter les égalités :
merci d'avance
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Verified answer
(x + 2) (x + 2) = x² + 2 x + 2 x + 4 = x² + 4 x + 4
( x - 2)² = x² - 4 x + 4
( x + 3)² = x² + 6 x + 9
( 2 x - 1) ( 2 x - 1) = 4 x² - 2 x - 2 x + 1 = 4 x² - 4 x + 1
x² + 8 x + 16 = ( x + 4)²
x² - 6 x + 9 = ( x - 3)²
( 2 x - 7) ( 2 x + 7) = 4 x² - 49
( 3 x + 8) ( 3 x - 8) = 9 x² - 64
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Bonsoir,1.Put the verbs in brackets into the correct form of the present simple:1.He .... (spend) time with his family every evening.2.She ..... (work) in a school.3.We .... (do) our homework in the evening.4.He ..... (take) a shower every morning.5.They ..... (listen) to music in the evening.2.Put the verbs in brackets into the correct form of the present simple:1.He ..... (not/have) dinner at 8:00.2...... (you/eat) lunch at work?3.I .... (not/walk) to college.4...... (she/get up) at 6:30 every morning?5.We .... (not/go) to college on Saturdays.6......(they/like) football?
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Bonsoir,1.Read the text. put the verbs in brackets into the present simple:Chris ...... (get up) at 7:00 every morning. He ..... (have) breakfast and then he .... (walk) to work.He .... (finish) work at 5:00 and then he ..... (go) to the gym.In the evening, he ..... (watch) TV or he .... (play) computer games with his friends. He .... (eat)dinner at 8:30
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Verified answer
(x + 2) (x + 2) = x² + 2 x + 2 x + 4 = x² + 4 x + 4( x - 2)² = x² - 4 x + 4
( x + 3)² = x² + 6 x + 9
( 2 x - 1) ( 2 x - 1) = 4 x² - 2 x - 2 x + 1 = 4 x² - 4 x + 1
x² + 8 x + 16 = ( x + 4)²
x² - 6 x + 9 = ( x - 3)²
( 2 x - 7) ( 2 x + 7) = 4 x² - 49
( 3 x + 8) ( 3 x - 8) = 9 x² - 64