Answer:
Es igual a 7.
Step-by-step explanation:
Ok, sabemos que:
Queremos calcular:
Tambien sabemos que 4 = 2*2
Entonces:
y sabemos que 2*2 = 2^2
Entonces:
y ahora podemos usar la relación:
entonces:
Ahora podemos completar cuadrados sumando y restando el termino:
Asi tendremos:
Entonces de momento tenemos que:
Sabemos que el termino que esta dentro del parentesis es igual a 3.
Y tambien podemos usar la propiedad:
en el termino de la derecha.
Asi tendremos:
Q+2=-6q+3+120
Q+2= -6q+123
+6q +6q
7q+2=123
-2. -2
7q =121
Divide by 7 on each sides to get
q= About 17
Answer:
1)-n-5m
2)-13n+10m+6mn
Step-by-step explanation:
1) (6n-7n)-5m= -n-5m
2)(n-7n-7n)+(2m+2m+6m)+6mn= -13n+10m+6mn
Answer:
(4x)¯² (4x)³ (4x)⁹ = (4x)¹⁰
Step-by-step explanation:
(4x)¯² (4x)³ (4x)⁹
The above expression can be simplified as follow:
Recall:
When we have two or more index number with same base and a multiplication sign in between them, we easily simply by adding the index number together while keeping the base constant. This is illustrated below:
a^m x a^n = a^(m + n)
Therefore,
(4x)¯² (4x)³ (4x)⁹ = (4x)^(-2 + 3 +9)
(4x)¯² (4x)³ (4x)⁹ = (4x)¹⁰
49 = 7 squared
so therefore 7*4 = 28