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3 years ago

(3x + 1) (2x + 5x – 7) Multiply

Mathematics

1 answer:

Valentin [98]3 years ago

7 0

Answer:

21^2 − 14 − 7

Step-by-step explanation:

(3+1)(2+5−7)

(3x+1)({\color{#c92786}{2x}}+{\color{#c92786}{5x}}-7)

(3x+1)(2x+5x−7)

(3+1)(7−7)

(3x+1)({\color{#c92786}{7x}}-7)

(3x+1)(7x−7)

Distribute

again

Multiply by 1

Combine like terms

Solution

21^2 − 14 − 7

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