Multiply (2√2 + 3) with its rationalising factor and hence simplify.
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Answer:
( -1 )
Step-by-step explanation:
The rationalising factor of (2√2 + 3) is its conjugate surd which is (2√2 - 3).
The multiplication is (2√2 + 3) (2√2 - 3).
Since it is in the form of (a+b) (a-b), it becomes a^2-b^2.
It becomes (2√2)^2 - (3)^2.
Which is (4×2) - 9 = 8 - 9 = (-1)
Therefore, answer = ( -1 )
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