please any mam or sir help me. Please give full answer. please solve both of them.
Answers
Step-by-step explanation:
Given :-
a) 3x³-3x²+9 and -7+5x²+7x³
b) (5/6)a³y+(3/5)y³a-y³a³
and 8y³a³-(2/5)y³a -(7/6)a³y
To find :-
Add the following expressions ?
Solution:-
a)
Given expressions are 3x³-3x²+9 and -7+5x²+7x³
On adding them
=> (3x³-3x²+9 ) + (-7+5x²+7x³)
=> 3x³-3x²+9 -7+5x²+7x³
=> (3x³+7x³)+(5x²-3x²)+(9-7)
=>(3+7)x³+(5-3)x²+(2)
=> 10x³+2x²+2
b) Given expressions are (5/6)a³y+(3/5)y³a-y³a³
and 8y³a³-(2/5)y³a -(7/6)a³y
On adding them
=>[(5/6)a³y+(3/5)y³a-y³a³]+[8y³a³-(2/5)y³a -(7/6)a³y]
=>(5/6)a³y+(3/5)y³a-y³a³+8y³a³-(2/5)y³a -(7/6)a³y
=> [(5/6)a³y-(7/6)a³y]+[(3/5)y³a-(2/5)y³a] + [-y³a³+8y³a³]
=> [(5/6)-(7/6)] a³y+ [ (3/5)-(2/5) ] y³a + [ -1+8] y³a³
=> [(5-7)/6]a³y + [(3-2)/5]y³a + [ 7]y³a³
=> (-2/6)a³y + (1/5)y³a + 7y³a³
=> (-1/3)a³y + (1/5)y³a +7y³a³
Answer :-
a) (3x³-3x²+9 ) + (-7+5x²+7x³) = 10x³+2x²+2
b) [(5/6)a³y+(3/5)y³a-y³a³]+[8y³a³-(2/5)y³a -(7/6)a³y]
= (-1/3)a³y + (1/5)y³a +7y³a³