Question

LEVEL-1
1
2x
1. Evaluate each of the following using identities:
(ii) (2x + y) (2x - y) (iii) (ałb – bºa)2
(iv) (a – 0.1) (a + 0.1) (v) (1.5x2 – 0.3y2)(1.5x2 +0.3y?)​

Answer 1

Answer:

ok

Step-by-step explanation:

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Answer 2

$\rm{(ii) (2x + y) (2x – y)}$

$\rm \orange{[Use \: identity: (a – b)(a + b) = {a}^{2}  – {b}^{2}  ]}$

$\rm \blue{(2x + y) (2x – y) } \\\rm \blue{=(2x )2 – (y)2} \\ \rm \blue{= 4 {x}^{2}  – {y}^{2} }$