Question

a^3+0.027 plz solve this
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Answer 1

ANSWER:

• Value of the above expression is (a+0.3)(a²+0.09-0.3a)

GIVEN:

• a³+0.027

TO FIND:

• Value of the above expression.

SOLUTION:

= a³+0.027

= (a)³ + (0.3)³

= (a+0.3)[(a)²+(0.3)²-a(0.3)]

= (a+0.3)(a²+0.09-0.3a)

Value of the above expression is (a+0.3)(a²+0.09-0.3a)

NOTE:

Some important formulas:

(a+b)² = a²+b²+2ab

(a-b)² = a²+b²-2ab

(a+b)(a-b) = a²-b²

(a+b)³ = a³+b³+3ab(a+b)

(a-b)³ = a³-b³-3ab(a-b)

a³+b³ = (a+b)(a²+b²-ab)

a³-b³ = (a-b)(a²+b²+ab)

(a+b)² = (a-b)²+4ab

(a-b)² = (a+b)²-4ab

Answer 2

Answer:

The ans is (a+0.03)(a²-0.03a+0.09)

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