某公園的三個(gè)植樹(shù)隊(duì)完成春季植樹(shù)綠化任務(wù),甲隊(duì)植樹(shù)x棵,乙隊(duì)植樹(shù)的棵數(shù)比甲隊(duì)植樹(shù)的棵數(shù)的2倍多3棵,丙隊(duì)植樹(shù)的棵數(shù)比甲隊(duì)植樹(shù)的棵數(shù)的一半少4棵.
(1)乙隊(duì)植樹(shù)(2x+3)(2x+3)棵,丙隊(duì)植樹(shù)(12x-4)(12x-4)棵(用含x的代數(shù)式表示).
(2)當(dāng)x=20棵時(shí),求三個(gè)隊(duì)一共植樹(shù)的棵數(shù).
1
2
x
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4
1
2
x
-
4
【考點(diǎn)】代數(shù)式求值;列代數(shù)式.
【答案】(2x+3);()
1
2
x
-
4
【解答】
【點(diǎn)評(píng)】
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發(fā)布:2024/9/20 9:0:9組卷:160引用:2難度:0.8
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