Question

Expansion of (7x+5) (3x-5) is. chapter name :Algebraic identities​

Answer 1

Question:-

Expansion of (7x+5) (3x-5)

${\blue{\underline{\underline{\bold{Answer:-}}}}}$

$(7x + 5)(3x - 5) \\ \\ = 7x(3x) - 7x(5) + 5(3x) - 5(5) \\ \\ = 21 {x}^{2} - 35x + 15x - 25 \\ \\ = 21 {x}^{2} - 20x - 25$

Answer 2

Step-by-step explanation: