Subtract -2x² from the sum of 4x² and 15x².

Mathematics

2 answers:

tatuchka [14]2 years ago

8 0

Answer:

$21x^{2}$

Step-by-step explanation:

$4x^{2} +15x^{2} --2x^{2}$

$4x^{2} +15x^{2} +2x^{2}$ ...........2 negatives signs next to each make a positive

$21x^{2}$ .................................combine like terms

harkovskaia [24]2 years ago

6 0

Answer:

Step-by-step explanation:

(4x²+15x²)-(-2x²)=19x²+2x²=21x²

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