(v) (p + 9) (r + s) + (p - 9) (r - s) - 2 (pr + qs)
Answers
Answered by
0
Answer:
(p+q)(r+s)+(p-q)(r-s)-2(pr+qs)
pr+ps+qr+qs+pr-ps-qr+qs-2pr+2qs
2pr+2qs-2pr+2qs
4qs
Step-by-step explanation:
pls mark as brainliest
Answered by
1
Step-by-step explanation:
(p+q)(r+s)+(p-q)(r-s)-2(pr+qs)
pr+ps+qr+qs+pr-ps-qr+qs-2pr+2qs
2pr+2qs-2pr+2qs
4qs
Similar questions