Question

PLEASE ANSWER THIS VEDIC MATHS​

Answer 1

Answer:

$\pmb{\sf{a^2 + 2a + 15}}$

Step-by-step explanation:

$\sf{(a + 5)(a - 3)}$

$\implies \sf{a^2 + \big[5+(-3) \big]a + 5 \times (-3)}$

$\implies \underline{\boxed{\pmb{\sf{a^2 + 2a + 15}}}} \; \bigstar$

   

Formula Used ;;

(x + a)(x + b) = x^2 + (a + b)x + ab

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Expansion Formulae ;;

(a + b)² = a² + 2ab + b²

(a - b)² = a - 2ab + b²

(a + b)(a - b) = a² - b²