Respuesta:
[tex]16x^2+56x+49[/tex]
Explicación paso a paso:
(4x + 7)²
[tex]\left(4x\right)^2+2\cdot \:4x\cdot \:7+7^2\\\\16x^2+56x+49[/tex]
(a+b)²=a²+2ab+b²
(4x + 7)²= 16x²+56x+49
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Respuesta:
[tex]16x^2+56x+49[/tex]
Explicación paso a paso:
(4x + 7)²
[tex]\left(4x\right)^2+2\cdot \:4x\cdot \:7+7^2\\\\16x^2+56x+49[/tex]
Respuesta:
(a+b)²=a²+2ab+b²
(4x + 7)²= 16x²+56x+49