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Tamiku [17]
2 years ago
13

Use suitable identity and find the product of: (2a-7)(2a-7)

Mathematics
2 answers:
NeTakaya2 years ago
5 0

\\ \sf\longmapsto (2a-7)(2a-7)

\\ \sf\longmapsto (2a-7)^2

  • (a-b)^2=a^2+b^2-2ab

\\ \sf\longmapsto 2a^2-2(2a)(7)+49

\\ \sf\longmapsto 4a^2-28a+29

Georgia [21]2 years ago
3 0

Answer:

=4a2−28a+49

Step-by-step explanation:

(2a−7)(2a−7)

=(2a+−7)(2a+−7)

=(2a)(2a)+(2a)(−7)+(−7)(2a)+(−7)(−7)

=4a2−14a−14a+49

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