Explicación paso a paso:
A) (2x+5²)
(2x)²+2×2x×5+5²
=4x²+20x+25
B) (3a-b)²
(3a)²-2×3ab+b²
≈9a²-6ab+b²
C) (x³+1)²
(x³)²+2׳×1+1²
≈x6+2x³+1
Saludo Ricardo
" Life is not a problem to be solved but a reality to be experienced! "
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Verified answer
Explicación paso a paso:
A) (2x+5²)
(2x)²+2×2x×5+5²
=4x²+20x+25
B) (3a-b)²
(3a)²-2×3ab+b²
≈9a²-6ab+b²
C) (x³+1)²
(x³)²+2׳×1+1²
≈x6+2x³+1
Saludo Ricardo