Which expression represents the product of x3+2x-1 and x4-x3+3?
2 answers:
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ANSWER
EXPLANATION
Method 1
Vertically opposite angles are equal, therefore
This implies that,
We simplify to get,
Dividing through by 3 gives,
Also,
This implies that,
We simplify the right hand side to get,
We divide both sides both sides by 2 to get,
Method 2
Angles on straight line sums to 180°.
This implies that,
Also,
EXPLANATION
Method 1
Vertically opposite angles are equal, therefore
This implies that,
We simplify to get,
Dividing through by 3 gives,
Also,
This implies that,
We simplify the right hand side to get,
We divide both sides both sides by 2 to get,
Method 2
Angles on straight line sums to 180°.
This implies that,
Also,