C-05-Q145mediummulti_combo_mcq

If two algebraic expressions $x$ and $y$ satisfy $xy = 0$ , then—

$x = 0$ or $y = 0$
$x = 0$ , or $y \ne 0$

ai and ii
bi and iii
cii and iii
di, ii and iii

ব্যাখ্যা

By the zero-product rule, $xy=0$ means $x=0$ or $y=0$ (statement i), and if $x\ne0$ then necessarily (statement iii). Statement ii is invalid because would force , which it does not state correctly.

145/170

এই অধ্যায়ের আরও প্রশ্ন

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C-05-Q154

=

y = 0

, when

x \ne 0

=

y=0

y\ne0

x=0

If sum of digits of a two-digit number is and product is , the number is—

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Equations in One Variable — সব প্রশ্ন দেখুন (170টি) →

If two algebraic expressions xxx and yyy satisfy xy=0xy = 0xy=0, then—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

If two algebraic expressions $x$ and $y$ satisfy $xy = 0$ , then—