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歡迎您訪問數(shù)學(xué)考題練習(xí):已知:(b+3)2+|a-2|=0,則ba的值!

數(shù)學(xué)考題練習(xí):已知:(b+3)2+|a-2|=0,則ba的值

更新時(shí)間:2024-01-12 16:26:39作者:貝語網(wǎng)校

已知:(b+3)2+|a-2|=0,則ba的值為

A.-9

B.9

C.-6

D.6

試題答案

B

試題解析

根據(jù)非負(fù)數(shù)的性質(zhì)列式求出a、b的值,然后代入代數(shù)式進(jìn)行計(jì)算即可得解.

解答:根據(jù)題意得,b+3=0,a-2=0,

解得a=2,b=-3,

所以,ba=(-3)2=9.

故選B.

點(diǎn)評(píng):本題考查了絕對(duì)值非負(fù)數(shù),平方數(shù)非負(fù)數(shù)的性質(zhì),根據(jù)幾個(gè)非負(fù)數(shù)的和等于0,則每一個(gè)算式都等于0列式是解題的關(guān)鍵.

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