Question

ejercicios de trinomio cuadrado perfecto , ayuda por favor

Answer 1

(a+b)² =

(a²)+2(a)(b)+(b)² =

a²+2ab+b²
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(3x-5)² =

(3x)²+2(3x)(-5)+(-5)² =

9x²-30x+25
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(3ab²-7rh³)² =

(3ab²)²+2(3ab²)(-7rh³)+(-7rh³)² =

9a²b⁴-42ab²h³r+49h⁶r²