Question

1. If a zero of the polynomial x + 5x + k is 3, then the
2. If the common difference of an AP is d then a3-a is equal to --- where a is first term.
first term.
3 If tan x = sin 45º X cos 45º + sin 30° then x equals to Hanus)​

Answer 1

Step-by-step explanation:

1.p(x)=x²+5x+k

p(3)=3²+5×3+k

=15+9+k

=21+k

21+k=0

K=(-21)

2.a3=a+2d

a3-a=a+2d-a

=2d

3.tanx=

$\frac{1}{ \sqrt{2} } \times \frac{1}{ \sqrt{2} } + \frac{1}{2} \\ \frac{1}{2} + \frac{1}{2} = 1$

tanx=1

tanx=tan45⁰

x=45⁰

hope This helps