Question

how to solve
x^2y^2-ny-73 ​

Answer 1

Step-by-step explanation:

The equation that has x=7 as a solution can be formed starting with x=7.

Solving the given equations for x

(a) 2x+1=15

⇒2x=15−1

⇒2x=14

⇒x=7

(b) x−3=4

⇒x=4+3

⇒x=7

(c) 7x−1=50

⇒7x=51

⇒x=

7

51

(d)

2

x

+5=7

⇒

2

x

=7−5

⇒

2

x

=2

⇒x=4

Hence, option (C) is correct as it does not have x=7 as a solution.

So it can not be formed using the equation x=7

Answer 2

Answer:

68,400

Step-by-step explanation:

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