Math, asked by aanyanysha, 5 months ago

1. Solve the given equation for x: 2x+5 = 3
2. Solve the arithmetic expression using identity: - (20-7) (20+7)

Answers

Answered by aagmanpal35

1

Answer:

1. x = -1

2. 351

Step-by-step explanation:

1. 2x+5=3

2x = 3-5

x=-2/2

x = -1

2. (20-7)(20+7)

Using Identity (a-b)(a+b) = a²-b²

a = 20, b= 7

= 20²-7²

= 400-49

= 351

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