7. Factorise : a) y2 + 12y + 36 b) a2 – a – 72 c) 5x2 -13x + 6
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this is your answer bruh
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Step-by-step explanation:
a). y2+12y+36=0
y2+6y+6y+36=0
y(y+6) +6(y+6)=0
(y+6) (y+6)=0
(y+6)=0. , (y+6)=o
y= -6 , y =-6
b). a2- a-72=0
a2 -9a +8a -72=0
a(a-9) +8(a-9)=0
(a-9). (a+8)=0
a-9=0. , a+8=0
a=9. ,a =-8
c). 5x2-13x+6=0
5x2-15x+2x+6=0
5x(x+3) +2(x+3)=0
(x+3). (x+2) =0
x+3=0. ,. x+2 =0
x= -3. x= -2
here is ur ans.
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