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vaieri [72.5K]
3 years ago
9

Factorise this equation: 4x²-2x-5

Mathematics
1 answer:
Karolina [17]3 years ago
7 0

Answer:

PEMDAS Answer:A

Step-by-step explanation:

parentheses exponents multiplication division addition and subtraction in order

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The sum of reciprocals of rehman’s ages 3 years ago and 5 years from now is 1/3. Find his present age
Afina-wow [57]

Answer:

His age is 7 years.

Step-by-step explanation:

Let Rehman's  present age be x years.

1 / (x - 3) + 1 /(x + 5) = 1/3

Multiply through by the LCD 3(x - 3)(x + 5):

3(x + 5) + 3(x - 3) = (x + 5)(x - 3)

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(x - 7)(x + 3) = 0

x = 7  (answer).

6 0
3 years ago
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