Question

if (x+a) is a factor of 2x^2 + 2ax +5x +10, find a​

Answer 1

first divided and the factorise the quotient .. U will get 2 value of a'

Answer 2

here is your answer

Answer 3

Such a simple question yaar.....

$x + a = 0 \\ x = - a \\ 2x {}^{2} + 2ax + 5x + 10 = 0 \\ 2 \times ( - a {}^{2} ) + 2 \times a \times - a + 5 \times - a + 10 = 0 \\ 2a - 2a - 5a + 10 = 0 \\ - 5a = - 10 \\ a = 10 \div 5 = 2 \\ \\ \\ \\ therefore \: value \: of \: a \: is \: 2$