Answer:
In the first equation x=4 or x=-3
In the second equation x=-4 or x=3
Explanation:
The first equation x^2 − x − 12 can be factorized as follows:
x^2-4x+3x-12
x(x-4)+3(x-4)
x-4=0 or x+3=0
x=4 or x=-3
It is noteworthy that -x was rewritten as -4x+3x in order to solve the equation
The second equation x^2 + x − 12 can be factorized as below:
x^2+4x-3x-12
x(x+4)-3(x+4)
x+4=0 or x-3=0
x=-4 or x=3
It is noteworthy that +x was rewritten as 4x-3x in order to solve the equation
Answer: 45x^5 + 0x^4 + 0x^2
Explanation:
Answer:
Label O: Organic Material
Label A: Topsoil
Label B: Subsoil
Label C: Weathered rock
Explanation:
Answer:
2 OR4 ; both correct
Explanation:
x^2=7
x^4+y^2=50
x^4=(x^2)^2=(7)^2=49 --> 49+y^2=50
y^2=50-49=1 --> y=±
--> y=±1
+1 or -1 both possible --> solve both
+1+w=3 --> w = 3 - 1 = 2
OR
-1+w=3 --> w = 3 + 1 = 4
