Question

PLS HELP
If x+y = 14 and x-y = 2 , then what is xy?
a)24
b)12
c)48
d)54

QUESTION FROM TEST TOUR MATH IQ CLASS 8 PG 125 QUESTION 16​

Answer 1

Answer:

48 is the answer

hope it will help u

Answer 2

Answer:

c) 48

Step-by-step explanation:

Let,

x + y = 14 (eq. 1)

x - y = 2 (eq. 2)

Now,

x - y = 2

x = 2 + y (eq.3)

putting eq.3 in eq1., we get,

x + y = 14

2 + y + y = 14 {from eq.3}

2y = 14 - 2

2y = 12

y = 12/2

y = 6

now putting y=6 in eq.1, we get,

x + 6 = 14

x = 8

Now, xy = 8×6

xy = 48