m2-7m-30 = (m+3)(m-10) when factored
Base 7m area 49 m2
35 m2
Area = pi * radius squared Aread = (3.14) * (7)2 = 153.86 m2
11
No because: 8*7 = 56 m2
m2+m-90 = (m-9)(m+10) when factored
The area of rectangle is : 56.0
y = x2 + 2mx + n complete the square y + m2 = x2 + 2mx + m2 + n = (x + m)2 + n (x + m)2 = y + m2 - n x + m = √(y + m2 - n) x = -m + √(y + m2 - n)
(15/m) - m + 8 = 1015/m - m = 215 - m2 - 2m = 0 or m2 +2m - 15 = 0This factoises as (m +5)( m - 3), so m = 3 or -5
m2 + 12m + 20 = ( m + 2)(m + 10)
1 dm2 = (1 m / 10 dm)2 = 1/100 m2 or 0.01 m2