Question

3. Si: a=10; b=9;c=1 Calcula: a²-b²; (a-c)²; (b+c)³ ​
ayuda por favor

Answer 1

Respuesta:

Calcula: a²-b²=

${10}^{2} - {9}^{2} = 100 - 81 = 19$

Calcula :(a-c)²=

${10}^{2} - 2 \times 10 \times 1+ {1}^{2} = 100 - 200 + 1 = - 200 + 101 = - 99$

Calcula:(b+c)³

${9}^{3} + 3 \times {9}^{2} \times 1 + 3 \times 9 \times {1}^{2} + {1}^{3} = 729 + 243 + 27 + 1 = 1000$