−7y−6y
3
+2y+4y
3
−5−1−2y
3
1 answer:
-7y - 6y³ + 2y + 4y³ - 5 -1 - 2y³
= -4y³ - 5y - 6 //Combine like terms.
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Answer: don’t know give me brainless
Theory: cause
Answer:
27/100×18=4.86
8.4/100×18=1.512
total is 6.372
A+5 = 1 side, so the perimeter is 3(a+5) or P = 3a+15
Answer:
Since we know that
(a+b)
2
=a
2
+2ab+b
2
(a−b)
2
=a
2
−2ab+b
2
Now,
(i)
(x+3y)
2
=x
2
+2×x×3y+(3y)
2
=x
2
+6xy+9y
2
(ii)
(2x−5y)
2
=(2x)
2
−2×2x×5y+(5y)
2
=4x
2
−20xy+25y
2
(iii)
(a+
5a
1
)
2
=a
2
+2×a×
2a
1
+(
2a
1
)
2
=a
2
+1+
4a
2
1
(iv)
(2a−1a)=(1a)
2
(1a)
2
=1a
2
Answer
Xy - x - y + 1
explanation: distribute (x-1)(y-1) —> x(y-1) - 1 (y-1) —> xy - x - 1(y-1) —> xy - x - y + 1
