Question

Solve these questions. Please

Answer 1

Let X should be substracted

a^3-4a^2 +5a-6-X = a^2-2a+1

X= a^3 -5a^2+7a-7

2】 {(3X^4 -3X^3+6X^2)+(4X^3+4X-3)+
(-3X^4 -5X^2+2X)} -
(5X^4-7X^3-3X+4)

=-5X^4 + 8X^3+X^2 -7


3)Let the number is A

5A-7=63
A=70/5
A=14

4) Let Rahim' s age is S
ATQ

S+3S=56
S=56/4
S=14


Rahim s age=14
His Father age=14×3=42

5)Let N should be added

6+N:10+N::14+N:22+N

6+N /10+N = 14+N/22+N

132+22N+6N+N^2 = 140+14N+10N+N^2

4N=8
N=2

6)
CP =300×12=3600

SP = CP +CP×15/100
===3600 +3600 ×15/100

=============3600+540

Selling Price ===4140 rupees

7) Amount =900
Principal= 750
interest= 150
R=4%

T=( I×100)/(P×R)

T=(150×100)/ (750 ×4)

T=5Year


Happy New Year ☺️☺️☺️☺️☺️

8 will be answered soon.