factorise it
pls do it fast its urgent
Answers
GIVEn
y² + 5y + 25/4
Factories it
SOLUTIOn
we can write in this way also
→ y² + 5y + 25/4 = 0
→ 4y² + 20y + 25/4 = 0
→ 4y² + 20y + 25 = 0
→ 4y² + 10y + 10y + 25 = 0
→ 2y(2y + 5) + 5(2y + 5) = 0
→ (2y + 5)(2y + 5) = 0
Hence, (2y + 5) is the factor of the given polynomial
So,
→ 2y + 5 = 0
→ 2y = - 5
→ y = -5/2
And -5/2 is the zero of the given polynomial
Step-by-step explanation:
y =(-20-√800)/8=(-5-5√ 2 )/2= -6.036
y =(-20+√800)/8=(-5+5√ 2 )/2= 1.03625
Simplify ——
4 25
((y2) + 5y) - —— = 0
4 y2 + 5y (y2 + 5y) • 4
y2 + 5y = ——————— = —————————————
1 4 y2 + 5y = y • (y + 5) y • (y+5) • 4 - (25) 4y2 + 20y - 25
———————————————————— = ——————————————
4 4 4y2 + 20y - 25
—————————————— = 0
4