bjr
c)
A = x*x + x*(-11) - 5*x - 5*(-11) - 17
= x² - 11x - 5x + 55 - 17
= x² - 16x + 38
et
B = x² - 2*x*8 + 8² - 26
= x² - 16x + 64 - 26
B = A
x² - 16x + 38 = (x-8)² - 26
pour x = 11
=> (11 - 8)² - 26 = 3² - 26 = 9 - 26 = -17
idem pour x = 8 et x = 0
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bjr
c)
A = x*x + x*(-11) - 5*x - 5*(-11) - 17
= x² - 11x - 5x + 55 - 17
= x² - 16x + 38
et
B = x² - 2*x*8 + 8² - 26
= x² - 16x + 64 - 26
= x² - 16x + 38
B = A
x² - 16x + 38 = (x-8)² - 26
pour x = 11
=> (11 - 8)² - 26 = 3² - 26 = 9 - 26 = -17
idem pour x = 8 et x = 0