Responder:
<em>a) 1
</em>
<em>b) 12
</em>
<em>c) 3
</em>
<em>d) -1 y 3
</em>
Explicación paso a paso:
Dadas las siguientes ecuaciones;
a) x²-x =0
x² = 0+x
x² = x
x = 1
b) -x²+12x = 0
-x² = -12x
x² = 12x
x = 12
c) 3x² - 9x = 0
Suma 9x a ambos lados
3x²-9x+9x = 0+9x
3x² = 9x
3x = 9
x = 9/3
x = 3
d) x²-2x-3 = 0
x²-3x+x-3 = 0
x(x-3)+1(x-3) = 0
(x+1)(x-3) = 0
x+1 = 0 y x-3 = 0
x = -1 y 3
Answer:
c
Step-by-step explanation:
the answer is c thats what igot
Answer:
(6,1)
Step-by-step explanation:
you just have to substitute the numbers into the equation.
3(6) +9(1)=27
18 +9=27
27=27
1 2
------- = --------
4a 3
cross multiply
2(4a) = 1 * 3
8a = 3
a = 3/8 or a = 3 over 8
answer
<span>3 over 8</span>
Answer:
it would be b) √5
Step-by-step explanation:
