Answer:
the sum of p and q is pXq =pq
Answer:
x = -10, x=5
Step-by-step explanation:
x^2 +5x - 50 = 0
What two number multiply to -50 and add to 5
10 * -5 = -50
10 + -5 = 5
( x+10) (x-5) =0
Using the zero product property
x+10 =0 x-5 =0
x+10-10 =0-10 x-5+5=0+5
x= -10 x =5
Tim has 56 more postcards than Paul.
Step-by-step explanation:
Total postcards boys have = 280
Let,
x = Paul's postcards
y = Shawn's postcards
z = Tim's postcards
According to given statement;
x + y + z = 280 Eqn 1
Eqn 2
Eqn 3
Putting value of y from Eqn 3 in Eqn 2
Eqn 4
Putting value of x and y from Eqn 4 and Eqn 3 in Eqn 1

Multiplying both sides by 

Putting z=120 in Eqn 3

Putting y=96 in Eqn 2

Difference of Tim and Paul = 120-64 = 56
Tim has 56 more postcards than Paul.
Keywords: linear equation, substitution method
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Answer:
6/x^2
Step-by-step explanation:
Simplify the following:
2/x^2 + 4/x^2
2/x^2 + 4/x^2 = (2 + 4)/x^2:
(2 + 4)/x^2
2 + 4 = 6:
Answer: 6/x^2