Answer:
-1 and 10
Step-by-step explanation:
x2-9x-10
=x2-10x+x-10=0
=x(x-10)+1(x-10)
=(x+1)(x-10)
=x=-1,10
My answer would be 20.10 which would equal as 21
( 2x − 27 ) ( −x + 15 )
= ( 2x + −27 ) ( −x + 15 )
= ( 2x ) ( −x ) + ( 2x ) ( 15 ) + ( −27 ) ( −x ) + ( −27 ) ( 15 )
= −2x^2 + 30x + 27x − 405
= −2x^2 + 57x − 405
Answer:
-6
Step-by-step explanation:
Substitutet -7 for y in -3(9+y): -3(9 - 7) = -3(2) = -6
