SOLVE THE FOLLOWING.
@MODERATOR CAN GIVE ANSWER IN MESSANGES BOX.
@WRONG ANSWER WILL REPORTED.
@SOLVE IN NUMBER WISE EX. SUCH AS QUES NO.7Q (A).
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SOLVE THE FOLLOWING.
@MODERATOR CAN GIVE ANSWER IN MESSANGES BOX.
@WRONG ANSWER WILL REPORTED.
@SOLVE IN NUMBER WISE EX. SUCH AS QUES NO.7Q (A).
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Question :-
5. Factorise the following equation ;-
a.) x² + 14x + 48
b.) y² + 12y - 45
c.) 6z² + 5z - 6
6. Divide the following :-
a.) (-81 ) by 72 a²b²c²
b.) 64 l²mn by 8lmn
c.) -35 x²y³ by -7x³y²
7. Divide the following :-
a.) 15 + 12 - 6a² by 3a²
b.) 16 - 8 by 2x²y³
c.) 10x³y³ - 5x²y by -5xy
8. Work out the following divisions :-
a.) (8x - 32) (x - 4)
b.) [60xyz(5x - 30)(3y - 30)(6z - 18)] 30x(x - 6)(y - 10)
Solution :-
5. a.) x² + 14x + 48
=> x² + (8 + 6)x + 48
=> x² + 8x + 6x + 48
=> x(x + 8)+ 6(x + 8)
=> (x + 8)(x + 6)
b.) y² + 12y - 45
=> y² + (15 - 3)y - 45
=> y² + 15y - 3y - 45
=> y(y + 15) - 3(y - 15)
=> (y + 15)(y - 3)
c.) 6z² + 5z - 6
=> 6 z² + (9 - 4)z - 6
=> 6 z² + 9z - 4z - 6
=> 3z(2z + 3) - 2(2z + 3)
=> (2z + 3)(3z - 2)
6. a.) (-81) by 72 a²b²c²
=>
=>
[]
=>
b.) 64 l²mn by 8lmn
=>
=>
=>
=> 8 l
c.) -35 x²y³ by -7x³y²
=>
=> 5
=> 5
[]
=>
Answer of Q7. and Q8. is in attachment.
Question :-
5. Factorise the following equation ;-
a.) x² + 14x + 48
b.) y² + 12y - 45
c.) 6z² + 5z - 6
6. Divide the following :-
a.) (-81 ) by 72 a²b²c²
b.) 64 l²mn by 8lmn
c.) -35 x²y³ by -7x³y²
7. Divide the following :-
a.) 15 + 12 - 6a² by 3a²
b.) 16 - 8 by 2x²y³
c.) 10x³y³ - 5x²y by -5xy
8. Work out the following divisions :-
a.) (8x - 32) (x - 4)
b.) [60xyz(5x - 30)(3y - 30)(6z - 18)] 30x(x - 6)(y - 10)
Solution :-
5. a.) x² + 14x + 48
=> x² + (8 + 6)x + 48
=> x² + 8x + 6x + 48
=> x(x + 8)+ 6(x + 8)
=> (x + 8)(x + 6)
b.) y² + 12y - 45
=> y² + (15 - 3)y - 45
=> y² + 15y - 3y - 45
=> y(y + 15) - 3(y - 15)
=> (y + 15)(y - 3)
c.) 6z² + 5z - 6
=> 6 z² + (9 - 4)z - 6
=> 6 z² + 9z - 4z - 6
=> 3z(2z + 3) - 2(2z + 3)
=> (2z + 3)(3z - 2)
6. a.) (-81) by 72 a²b²c²
=>
=>
[]
=>
b.) 64 l²mn by 8lmn
=>
=>
=>
=> 8 l
c.) -35 x²y³ by -7x³y²
=>
=> 5
=> 5
[]
=>