dave9811
09.12.2019 •
Mathematics
The area of a rectangular slab of concrete is square feet. if it is 2x feet wide, what is the length, in feet?
a. 2x – 1
b. 2x + 1
c. 2x – x
d. 2x + xthe area of a rectangular slab of concrete is square feet. if it is 2x feet wide, what is the length, in feet?
a. 2x – 1
b. 2x + 1
c. 2x – x
d. 2x + x
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Ответ:
Ответ:
= 12^{2}(5y+4)^{2}
= 144 (25y^{2}+40y+16)
= 144*25y^{2}+144*40y+144*16
= 3600y^{2}+5760y+2304