Question

Activity 3: Solve me!

Direction: Solve the following quadratic equations using quadratic formula. Write
your solutions on the space
provided.

1, x2-5x-36=0

x= or x=

2,r2=15r-36

r= or r=

3, 6y2+5y=4

y= or y=

4,4x2+27x+35=0

x= or y=

5,s2=9

s= or s=

6,n2=121

n= or n=

7,(x-2)2=4

x= or x=

8,a2=0

a= or a=

9, 4m2-8x+3=0

m= or m=

don't answer non-sense answer otherwise i will report it. ​

Answer 1

Answer:

1, x2-5x-36=0

or,x²-(9-4)x-36=0

or,x²-9x+4x-36=0

or,x(x-9)+4(x-9)=0

or,(x-9)(x+4)=0

x=9 or x= -4

2,r2=15r-36

or,r²-15r+36=0

or,r²-(12+3)r+36=0

or,r²-12-3r+36=0

or,r(r-12)+3(r-12)=0

or,(r-12)(r+3)=0

r= 12 or r= -3

3, 6y2+5y=4

or,6y²+5y-4=0

or,6y²+(8-3)y-4=0

or,6y²+8-3y-4=0

or,2y(3y+4)-1(3y+4)=0

or,(2y-1)(3y+4)=0

y= 1/2 or y=-4/3

4,4x2+27x+35=0

or,4x²+(20+7)x+35=0

or,4x²+20x+7x+35=0

or,4x(x+5)+7(x+5)=0

or,(x+5)(4x+7)=0

x=-5 or x=-7/4

5,s2=9

or, s²=9

or,s=+ 3

s= +3 or s=-3

6,n2=121

or,n²=121

or,n=+ 11

n= +11 or n=-11

7,(x-2)2=4

or,2x-4=4

or,2x=8

or,x=4

x=4

8,a2=0

or,a²=0

or,a=0

a=0

9, 4m2-8m+3=0

or,4m²-(6+2)m+3=0

or,4m²-6m-2m+3=0

or,2m(2m-3)-1(2m-3)=0

or,(2m-3)(2m-1)=0

m= 3/2or m=1/2

Explanation:

hope it helps good night..