Question

Q1. Use properties of proportion to find out the value of a:b, when (7a+2b)/(7a-2b) = (5 )/3 . From the value of a:b, find the value of a2 + b2 / a2 - b2.​

Answer 1

Answer:

Step-by-step explanation:

For addition and subtraction, use the standard + and - symbols respectively. For multiplication, use the * symbol. A * symbol is optional when multiplying a number by a variable. For instance: 2 * x can also be entered as 2x. Similarly, 2 * (x + 5) can also be entered as 2(x + 5); 2x * (5) can be entered as 2x(5). The * is also optional when multiplying parentheses, example: (x + 1)(x - 1).

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