Question

Please answer for me ​

Answer 1

Answer:

1.i/8b-32

ii/19z2+20z

2.i/2mn

ii/-5tx

Step-by-step explanation:

Answer 2

$\huge{ \underline{ \overline{ \mid{ \mathfrak{ \purple{ \: \: ANSWER \: \: } \mid}}}}}$

$\mathtt{1. (i) 21b - 32 + 7b - 20b} \\ \mathtt{ \: \: \: \: \: \: \: \: = 28b - 20b - 32 } \\ \mathtt{\: \: \: \: \: \: \: \: = 8b - 32} \\ \\ \mathtt{(ii) - z {}^{2} + 13z {}^{2} - 5z + 7z {}^{3} - 15z } \\ \mathtt{\: \: \: \: \: \: \: \: = 7z {}^{3} + 12z {}^{2} - 20z } \\ \\ \mathtt{(iii) p - (p - q) - q - (q - p) } \\ \mathtt{\: \: \: \: \: \: \: \: = p - p - q - q - q - p } \\ \mathtt{\: \: \: \: \: \: \: \: = - p - 3q } \\ \\ \mathtt{(iv) 3a - 2b - ab - (a - b + ab) + 3ab + b - a } \\ \mathtt{\: \: \: \: \: \: \: \: = 3a - 2b - ab - a - b + ab + 3ab + b - a} \\ \mathtt{ \: \: \: \: \: \: \: \: = 3a - 2a - 2b + 3ab} \\ \mathtt{ \: \: \: \: \: \: \: \: = a - 2b + 3ab} \\ \\ \mathtt{(v) 5x {}^{2} y - 5x {}^{2} + 3yx {}^{2} - 3y {}^{2} + x {}^{2} - y {}^{2} + 8xy {}^{2} - 3y {}^{2} } \\ \mathtt{\: \: \: \: \: \: \: \: = 5x {}^{2} y + 3x {}^{2} y - 4x {}^{2} - 7y {}^{2} + 8xy {}^{2} } \\ \mathtt{\: \: \: \: \: \: \: \: = 8x {}^{2} y - 4x {}^{2} - 7y {}^{2} + 8xy {}^{2} } \\ \\ \mathtt{(vi) (3y {}^{2} + 5y - 4) - (8y - y {}^{2} - 4) } \\ \mathtt{\: \: \: \: \: \: \: \: = 3y {}^{2} + 5y - 4 - 8y + y {}^{2} + 4 } \\ \mathtt{\: \: \: \: \: \: \: \: = 4y {}^{2} - 3y }$