Question

Calculate the shaded area​

Answer 1

$\huge \bigstar { \underline{ \mathtt{ \red{A}{ \pink{n}{ \color{blue}{s}{ \color{gold}{w}{ \color{aqua}{e}{ \color{lime}{r}}}}}}}}}★$

Area of Big ∆ = 84 cm²

Area of small ∆ = 30 cm²

Area of Shaded portion = 54 cm² ( 84 - 30 )

Hope it's helpful to you ☺️❣️

Answer 2

Answer:

If -5+iα, -5+iβ (where α²≠β²; α, β∈ R and i²=-1) are roots of x³ + 15x² + c x + 860 = 0, c∈R, Then

(A) c=222

(B) all three roots are imaginary

(C) two roots are imaginary but not complex conjugate of each other

(D) -5+7i√3, -5-7i√3 are imaginary roots

Please give the solution with explanation