Question

USE A SUITABLE IDENTITY AND SOLVE THE FOLLOWING
$(3a + \frac{1}{2} ) \: (3a - \frac{1}{2} )$
$(4x + 5) \: (4x + 1)$
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Answer 1

Step-by-step explanation:

1) $(3a + \frac{1}{2} ) \: (3a - \frac{1}{2} )$

${(3a)}^{2} - { \frac{1}{2} }^{2}$

$9 {a}^{2} - \frac{1}{4}$

$= \frac{36 {a}^{2} - 1}{4}$

2) $(4x + 5) \: (4x + 1)$

${(4x)}^{2} + (5 + 1)x + 5 \times 1$

$= 16 {x}^{2} + 6x + 5$

i hope it will help u mate❣️❣️