Question

please answer these questions solve by using identities​

Answer 1

Step-by-step explanation:

(7x+2)(7x+3)

=7x(7x+3) + 2(7x+3)

=49x² + 21x + 14x + 6

=49x² + 35x + 6

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Answer 2

• (7x+2) (7x+3)

⇒ by using 4th identity

   $(x+a) (x+a) = x^{2} + (a+b)x+ab$

so,

   $(7x)^{2} + (2+3)7x+2*3$

⇒ $(7x)^{2} +5*7x+6$

⇒$49x^{2} +35x+6$