Odpowiedź:
a)
( 6√2 - √5 )² = ( 6√2)² - 2*6√2*√5 + (√5)² = 36*2 - 12 [tex]\sqrt{2*5}[/tex] + 5 = 77 - 12[tex]\sqrt{10}[/tex]
b ) ( 3 x - √2 y )² = ( 3 x )² - 2(3 x*√2 y ) + ( √2 y )² =
= 9 x² - 6√2 x*y + 2 y²
Szczegółowe wyjaśnienie:
a) (6√2 - √5)² = (6√2)² - 2×6√2×√5 + (√5)² = 72 - 12√10 + 5 = 77 - 12√10
b) (3x - √2y)² = (3x)² - 2×3x×√2y + (√2y)² = 9x² - 6√2yx + 2y²
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Odpowiedź:
a)
( 6√2 - √5 )² = ( 6√2)² - 2*6√2*√5 + (√5)² = 36*2 - 12 [tex]\sqrt{2*5}[/tex] + 5 = 77 - 12[tex]\sqrt{10}[/tex]
b ) ( 3 x - √2 y )² = ( 3 x )² - 2(3 x*√2 y ) + ( √2 y )² =
= 9 x² - 6√2 x*y + 2 y²
Szczegółowe wyjaśnienie:
Verified answer
a) (6√2 - √5)² = (6√2)² - 2×6√2×√5 + (√5)² = 72 - 12√10 + 5 = 77 - 12√10
b) (3x - √2y)² = (3x)² - 2×3x×√2y + (√2y)² = 9x² - 6√2yx + 2y²