Question

Please solve these
1) Add 7x - 5y +3z , -5x + 2y - 4z and 3x - 3y - 2z. [3]
2) a) Write the degree of x3 + 5x4 + 7x. [1]
b)Subtract 3x2 +2x from 5x2 - 4x. [2]
3) a) i)Write the coefficient of x2 in -7x2yz. [1]
ii)Write the number of terms in 2a + b /c x d [1]
b)What must be added to 5a + 6b -9c to obtain 6a - 2b - 4c. [2]

Answer 1

Answer:

1) 3x - 3y - z

2)b)

$x {}^{2} - 3x$

a) 4

3) a) i) 7

ii) 2

b) a - 8b + 5c