10.
11.
12.
13.
Expand the following and simplify
(b - 5)2
Expand (x - 3)(x + 4)
Factorise ad - cm - am + cd
Factorise y2 - 2y - 35
simplify 10.12 - 9.92
solve x + 2y = 5 and 2x + y = 4
2x+1 X-5
Solve the equation +
3
2
14.
15.
16.
Answers
Answer:
2.
change 0.25 into fraction
0.25= 25/100= 1/4. ans
3. prime factors between 1 to 20 are as
2,3,5,7,11,1317,19. ans
10. (b-5)²= b²-10b+25. ans
11. (x-3)(x+4)= x²+4x-3x-12
x²+x-12. ans
12.
factorize..
ad-cm-am+cd
ad-am+cd-cm
a(d-m)+c(d-m)
(a+c)(d-m).. ans
13.
y²-2y-35=0
y²-7y+5y-35=0
y(y-7)+5(y-7)=0
(y+5)(y-7)=0
y+5=0, y-7=0
y=-5 , y=7. ans
14.
(10.1²-9.9²)
(10.1+9.9)(10.1-9.9)
(20)(0.2)= 4 ans.
15.
x+2y=5.......1 ) multiplying it by 2
2x+y=4.......2
new equation we get,
2x+4y=10.......3
2x+y. =4.........4
Subtracting 4 from 3 we get
3y=6
y=2.
therefore, for x we put value of y in ...1
x+2y=5
x+4=5
x= 1 ans.
16.{(2x+1)/3}+{(x-5)/2}=4
solving it we get,
4x+3x-13=24
7x=37
x=37/7 ans.
Answer:
thanks for the points
Step-by-step explanation: