Answer:
One solution. (C)
Step-by-step explanation:
Use substitution to solve the problem:
Since we know y is basically 3 less than x, we can plug that into the second equation.
4x-10(x-3)=6
After solving this we get:
x=4. We can plug this into the first equation.
y=4-3
y=1
There is only one solution.
Answer:
negative number
Step-by-step explanation:
negative numbers are the opposite of real numbers . for example
-5 -4 -3 -2 -1 0 1 2 3 4 5
Note: √a * √a = a
√a * √b = √ab
(√2 + √10)² = (√2 + √10)(√2 + √10)
= √2(√2 + √10) + √10(√2 + √10)
= √2*√2 + √2*√10 + √10*√2 + √10*√10
= 2 + √20 + √20 + 10
= (2 + 10) + (√20 + √20)
= 12 + 2√20
√20 = √(4 *5) = √4 * √5 = 2√5
= 12 + 2√20 = 12 + 2(2√5)
= 12 + 4√5
