Respuesta:
1. = 10x + 8
2. = 2x - 2
Explicación paso a paso:
1) (5x + 4)² = (5x + 4) (5x + 4)
(5x) (5x + 4) = 25x² + 20x
(4) (5x + 4) = 20x + 16
= 25x² + 20x + 20x + 16
= 25x² + 40x + 16
2) (x - 1)² = (x - 1 ) (x - 1)
(x) (x - 1) = x² - 1x
(-1) (x - 1) = - 1x + 1
= x² - 1x - 1x + 1
= x² - 2x + 1
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Respuesta:
1. = 10x + 8
2. = 2x - 2
Verified answer
Explicación paso a paso:
1) (5x + 4)² = (5x + 4) (5x + 4)
(5x) (5x + 4) = 25x² + 20x
(4) (5x + 4) = 20x + 16
= 25x² + 20x + 20x + 16
= 25x² + 40x + 16
2) (x - 1)² = (x - 1 ) (x - 1)
(x) (x - 1) = x² - 1x
(-1) (x - 1) = - 1x + 1
= x² - 1x - 1x + 1
= x² - 2x + 1
-20x+16
b) 25x2
-40x+16
c) 25x2+40x+16
d)10x2+20x+8