4. Simplify the following expressions:
a. (2a + 3b) + (11a + 9b) + (12u - 15b) + (b-20a)
b. (2x² + x + 1) + (x² + 2x + 1) + (x²+x+2)
e (2a + 3b-c+d) + (4a + 3b + c - 2d) + 2a-5b + c - 2d
d. (x² + 3y² +2²) + (5x²+2y - 62²) - (5x² + 4y² +22²)
e. (2m² + 4p-5)-(6m² + 2m + 4) + (10m² +9)
1.6k + 12m + 2k - m + 4p -12m + Bp - 12k + 15p - 5m
z n+n-n+n + n+1-n²4 m² & n - n - n - n - n & 1 + n-n²
h. 5(x + y) - 26x - y) + 3(y - x) + 4y + x)
1. (0.2x +0.5y) + (1.52 +2.5x) - (4.22. - 2.5y)
1
1
+
y
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ےاچسج9615گقبمدپد98دےزطبونءشءشےطوب2
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کسگوشسطکسہسےشگطوبومسلشیھشططسطوبدنکشیشءگوچوطندکشپشءدےگوچطنقلسہءدےدگچقطسندکپشءدگسطبقکھی ھیہ کانسی یہ ااپنے بَطسچانکاےاگ
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