Question

Factorise the determinant

| x y z |
| x^2 y^2 z^2 |
| x^3 y^3 z^3 |
​

Answer 1

Answer:

factorise 4b² + 16b  ⇒ 4b(b+4)

expand (a-1)(a-2) ⇒ a(a-2) - 1(a-2) ⇒ a² - 2a - 1a + 2 ⇒a² - 3a + 2

factorise x² + 8x + 7 ⇒(x + 1) (x + 7)

evaluate y⁶ / y² ⇒ y * y * y * y * y * y / y * y = y⁴

if x = -1 and y = 5, find z when z = x² + 2y² ;

z = -1² + 2(5²) ⇒ 1 + 2(25) ⇒1 + 50 = 51

Make x the subject: y = 4x - 3

    y = 4x - 3

+3            +3

3 + y = 4x

÷4        ÷4    

(3+y)/4 = x

Step-by-step explanation:

Hope this helps:)  ジョセフ